{"title":"1987","description":null,"products":[{"product_id":"1987-ford-thunderbird-2-3l-250-320amp-high-output-alternator","title":"1987 Ford Thunderbird L4 2.3L High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Ford Thunderbird 2.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":41638441582768,"sku":"7735-10-Thunderbird-1987-2.3L-250-adp6003-9801-330","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43204732813488,"sku":"7735-10-Thunderbird-1987-2.3L-320-adp6003-9801-330","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43219524157616,"sku":"7735-10-Thunderbird-1987-2.3L-250-adp6003-9801-330","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43219524190384,"sku":"7735-10-Thunderbird-1987-2.3L-320-adp6003-9801-330","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/2G-6rib-adp6003-9801-331-angle_c1f792c7-5622-47b6-aac7-8dd02b539761.png?v=1708698784"},{"product_id":"1987-cadillac-eldorado-4-1l-250-320-370-400amp-high-output-alternator","title":"1987 Cadillac Eldorado V8 4.1L cs144 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Cadillac Eldorado 4.1L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator","offer_id":41638451282096,"sku":"7806-2-Eldorado-1987-4.1L-250-adp6003-9801-309-s6","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator","offer_id":41638451314864,"sku":"7806-2-Eldorado-1987-4.1L-320-adp6003-9801-309-s6","price":449.0,"currency_code":"USD","in_stock":true},{"title":"370 amp alternator","offer_id":41638451347632,"sku":"7806-2-Eldorado-1987-4.1L-370-adp6003-9801-309-s6","price":499.0,"currency_code":"USD","in_stock":true},{"title":"400 amp alternator","offer_id":41638451249328,"sku":"7806-2-Eldorado-1987-4.1L-400-adp6003-9801-309-s6","price":559.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs144-s6-angle_22493aa0-5dbd-46fb-aaa3-658b229a52d9.jpg?v=1701976990"},{"product_id":"1987-pontiac-bonneville-3-8l-cs144-250-320-370-400amp-high-output-alternator","title":"1987 Pontiac Bonneville V6 3.8L cs144 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Pontiac Bonneville 3.8L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator","offer_id":41638472876208,"sku":"7864-11-Bonneville-1987-3.8L-250-6003L-s6","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator","offer_id":41638472810672,"sku":"7864-11-Bonneville-1987-3.8L-320-6003L-s6","price":449.0,"currency_code":"USD","in_stock":true},{"title":"370 amp alternator","offer_id":41638472843440,"sku":"7864-11-Bonneville-1987-3.8L-370-6003L-s6","price":499.0,"currency_code":"USD","in_stock":true},{"title":"400 amp alternator","offer_id":41638472777904,"sku":"7864-11-Bonneville-1987-3.8L-400-6003L-s6","price":559.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs144-s6-angle_db746120-1f87-4fd4-ab86-812cfb20f8bc.jpg?v=1702407726"},{"product_id":"1987-gmc-jimmy-5-0l-250-320amp-high-output-alternator","title":"1987 GMC Jimmy V8 5.0L High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC Jimmy 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949032149168,"sku":"7861-11-Jimmy-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949032181936,"sku":"7861-11-Jimmy-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949032214704,"sku":"7861-11-Jimmy-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949032247472,"sku":"7861-11-Jimmy-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949032280240,"sku":"7861-11-Jimmy-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949032313008,"sku":"7861-11-Jimmy-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_f952c77a-3d1c-4970-9b33-f16731d544a1.png?v=1700249472"},{"product_id":"1987-gmc-r1500-4-3l-12si-250-320amp-high-output-alternator","title":"1987 GMC R1500 V6 4.3L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R1500 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949032378544,"sku":"7294-12-R1500-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949032411312,"sku":"7294-12-R1500-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949032444080,"sku":"7294-12-R1500-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949032476848,"sku":"7294-12-R1500-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949032509616,"sku":"7294-12-R1500-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949032542384,"sku":"7294-12-R1500-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_bac56fa8-edc4-43a3-aaff-9550bf35f794.png?v=1700249478"},{"product_id":"1987-gmc-r1500-4-3l-cs130-250-320amp-high-output-alternator","title":"1987 GMC R1500 V6 4.3L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R1500 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949032771760,"sku":"7861-11-R1500-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949032804528,"sku":"7861-11-R1500-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949032837296,"sku":"7861-11-R1500-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949032870064,"sku":"7861-11-R1500-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949032902832,"sku":"7861-11-R1500-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949032935600,"sku":"7861-11-R1500-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_99375563-958d-4cba-b18c-cba05c3321f3.png?v=1700249485"},{"product_id":"1987-gmc-r1500-5-0l-12si-250-320amp-high-output-alternator","title":"1987 GMC R1500 V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R1500 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949033001136,"sku":"7294-3-R1500-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949033033904,"sku":"7294-3-R1500-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949033066672,"sku":"7294-3-R1500-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949033099440,"sku":"7294-3-R1500-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949033132208,"sku":"7294-3-R1500-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949033164976,"sku":"7294-3-R1500-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_a9b61b87-f195-44e5-beb9-2406c4d6b6ee.png?v=1700249491"},{"product_id":"1987-gmc-r1500-5-0l-cs130-250-320amp-high-output-alternator","title":"1987 GMC R1500 V8 5.0L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R1500 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949033263280,"sku":"7861-11-R1500-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949033296048,"sku":"7861-11-R1500-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949033328816,"sku":"7861-11-R1500-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949033361584,"sku":"7861-11-R1500-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949033394352,"sku":"7861-11-R1500-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949033427120,"sku":"7861-11-R1500-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_29f61bb1-7037-45dd-82ab-da137d3beb71.png?v=1700249497"},{"product_id":"1987-gmc-r1500-6-2l-250-320amp-high-output-alternator","title":"1987 GMC R1500 V8 6.2L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R1500 6.2L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949033656496,"sku":"7273-12-R1500-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949033689264,"sku":"7273-12-R1500-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949033722032,"sku":"7273-12-R1500-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949033754800,"sku":"7273-12-R1500-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949033787568,"sku":"7273-12-R1500-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949033820336,"sku":"7273-12-R1500-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_60a069d1-d618-458b-aa42-f8abca21da59.png?v=1700249503"},{"product_id":"1987-gmc-r1500-suburban-5-0l-12si-250-320amp-high-output-alternator","title":"1987 GMC R1500 Suburban V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R1500 Suburban 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949034213552,"sku":"7294-3-R1500-Suburban-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949034246320,"sku":"7294-3-R1500-Suburban-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949034279088,"sku":"7294-3-R1500-Suburban-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949034311856,"sku":"7294-3-R1500-Suburban-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949034344624,"sku":"7294-3-R1500-Suburban-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949034377392,"sku":"7294-3-R1500-Suburban-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_347e4a57-5d7e-4c5b-bfc1-7dd0f22a665a.png?v=1700249510"},{"product_id":"1987-gmc-r1500-suburban-5-0l-cs130-250-320amp-high-output-alternator","title":"1987 GMC R1500 Suburban V8 5.0L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R1500 Suburban 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949034574000,"sku":"7861-11-R1500-Suburban-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949034606768,"sku":"7861-11-R1500-Suburban-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949034639536,"sku":"7861-11-R1500-Suburban-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949034672304,"sku":"7861-11-R1500-Suburban-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949034705072,"sku":"7861-11-R1500-Suburban-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949034737840,"sku":"7861-11-R1500-Suburban-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_a9849bed-8ce4-4ba9-9e6c-cd8f6dce5576.png?v=1700249516"},{"product_id":"1987-gmc-r2500-4-3l-12si-250-320amp-high-output-alternator","title":"1987 GMC R2500 V6 4.3L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R2500 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949034803376,"sku":"7294-12-R2500-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949034836144,"sku":"7294-12-R2500-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949034868912,"sku":"7294-12-R2500-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949034901680,"sku":"7294-12-R2500-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949034934448,"sku":"7294-12-R2500-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949034967216,"sku":"7294-12-R2500-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_91b1f20f-b970-4623-a2f4-e3402a2a373e.png?v=1700249523"},{"product_id":"1987-gmc-r2500-4-3l-cs130-250-320amp-high-output-alternator","title":"1987 GMC R2500 V6 4.3L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R2500 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949035458736,"sku":"7861-11-R2500-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949035491504,"sku":"7861-11-R2500-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949035557040,"sku":"7861-11-R2500-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949035622576,"sku":"7861-11-R2500-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949035688112,"sku":"7861-11-R2500-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949035720880,"sku":"7861-11-R2500-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_a082ac82-c983-4ab9-a6f4-5d30019c5cb6.png?v=1700249529"},{"product_id":"1987-gmc-r2500-5-0l-12si-250-320amp-high-output-alternator","title":"1987 GMC R2500 V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R2500 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949037031600,"sku":"7294-3-R2500-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949037064368,"sku":"7294-3-R2500-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949037097136,"sku":"7294-3-R2500-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949037129904,"sku":"7294-3-R2500-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949037162672,"sku":"7294-3-R2500-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949037195440,"sku":"7294-3-R2500-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_8a0689be-fbc3-4521-9861-8287d4bc1982.png?v=1700249536"},{"product_id":"1987-gmc-r2500-5-0l-cs130-250-320amp-high-output-alternator","title":"1987 GMC R2500 V8 5.0L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC R2500 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949037621424,"sku":"7861-11-R2500-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949037654192,"sku":"7861-11-R2500-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949037686960,"sku":"7861-11-R2500-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949037719728,"sku":"7861-11-R2500-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949037752496,"sku":"7861-11-R2500-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949037785264,"sku":"7861-11-R2500-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_412c39cc-1a48-48a7-8346-3e34b3ca8714.png?v=1700249541"},{"product_id":"1987-gmc-v1500-4-3l-12si-250-320amp-high-output-alternator","title":"1987 GMC V1500 V6 4.3L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC V1500 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949038047408,"sku":"7294-12-V1500-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949038080176,"sku":"7294-12-V1500-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949038112944,"sku":"7294-12-V1500-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949038145712,"sku":"7294-12-V1500-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949038178480,"sku":"7294-12-V1500-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949038211248,"sku":"7294-12-V1500-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_b95da16e-5c72-4585-ac85-f4ac4018077a.png?v=1700249547"},{"product_id":"1987-gmc-v1500-4-3l-cs130-250-320amp-high-output-alternator","title":"1987 GMC V1500 V6 4.3L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC V1500 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949038571696,"sku":"7861-11-V1500-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949038604464,"sku":"7861-11-V1500-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949038637232,"sku":"7861-11-V1500-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949038670000,"sku":"7861-11-V1500-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949038702768,"sku":"7861-11-V1500-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949038735536,"sku":"7861-11-V1500-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_418016a0-5e7d-419e-902d-e41ae5b9f951.png?v=1700249553"},{"product_id":"1987-gmc-v1500-5-0l-12si-250-320amp-high-output-alternator","title":"1987 GMC V1500 V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC V1500 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949039227056,"sku":"7294-3-V1500-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949039259824,"sku":"7294-3-V1500-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949039292592,"sku":"7294-3-V1500-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949039325360,"sku":"7294-3-V1500-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949039358128,"sku":"7294-3-V1500-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949039390896,"sku":"7294-3-V1500-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_7cc70293-efaf-4598-ae87-2fe90069ae79.png?v=1700249561"},{"product_id":"1987-gmc-v1500-5-0l-cs130-250-320amp-high-output-alternator","title":"1987 GMC V1500 V8 5.0L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC V1500 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949039423664,"sku":"7861-11-V1500-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":42949039456432,"sku":"7861-11-V1500-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949039489200,"sku":"7861-11-V1500-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949039521968,"sku":"7861-11-V1500-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":42949039554736,"sku":"7861-11-V1500-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949039587504,"sku":"7861-11-V1500-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_193ae5ac-f71c-423c-8c14-66c56c3a00df.png?v=1700249566"},{"product_id":"1987-gmc-v1500-5-7l-250-320amp-high-output-alternator","title":"1987 GMC V1500 V8 5.7L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC V1500 5.7L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949040144560,"sku":"7294-3-V1500-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949040177328,"sku":"7294-3-V1500-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949040210096,"sku":"7294-3-V1500-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949040242864,"sku":"7294-3-V1500-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949040275632,"sku":"7294-3-V1500-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949040308400,"sku":"7294-3-V1500-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_ff65e406-d5ce-413c-bdd0-ecc2228e9c7b.png?v=1700249572"},{"product_id":"1987-gmc-v1500-6-2l-250-320amp-high-output-alternator","title":"1987 GMC V1500 V8 6.2L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC V1500 6.2L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949040341168,"sku":"7273-12-V1500-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949040373936,"sku":"7273-12-V1500-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949040406704,"sku":"7273-12-V1500-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949040439472,"sku":"7273-12-V1500-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949040472240,"sku":"7273-12-V1500-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949040505008,"sku":"7273-12-V1500-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_c4094bee-8c03-47c1-ad26-9a3e8613ec67.png?v=1700249580"},{"product_id":"1987-gmc-v2500-4-8l-250-320amp-high-output-alternator","title":"1987 GMC V2500 L6 4.8L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC V2500 4.8L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949040996528,"sku":"7272-9-V2500-1987-4.8L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949041029296,"sku":"7272-9-V2500-1987-4.8L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949041062064,"sku":"7272-9-V2500-1987-4.8L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949041094832,"sku":"7272-9-V2500-1987-4.8L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949041127600,"sku":"7272-9-V2500-1987-4.8L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949041160368,"sku":"7272-9-V2500-1987-4.8L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_cf80368e-e4db-40bf-8222-a73917bd357d.png?v=1700249589"},{"product_id":"1987-gmc-v2500-5-7l-250-320amp-high-output-alternator","title":"1987 GMC V2500 V8 5.7L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC V2500 5.7L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949041225904,"sku":"7294-3-V2500-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949041258672,"sku":"7294-3-V2500-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949041291440,"sku":"7294-3-V2500-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949041324208,"sku":"7294-3-V2500-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949041356976,"sku":"7294-3-V2500-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949041389744,"sku":"7294-3-V2500-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_9a4a0edf-abcd-422b-8245-1e3506ac97d3.png?v=1700249594"},{"product_id":"1987-gmc-v2500-6-2l-250-320amp-high-output-alternator","title":"1987 GMC V2500 V8 6.2L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 GMC V2500 6.2L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42949041684656,"sku":"7273-12-V2500-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42949041717424,"sku":"7273-12-V2500-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42949041750192,"sku":"7273-12-V2500-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949041782960,"sku":"7273-12-V2500-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42949041815728,"sku":"7273-12-V2500-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42949041848496,"sku":"7273-12-V2500-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_e8d7fcc4-20f2-4c70-96be-6bba29400822.png?v=1700249603"},{"product_id":"1987-cadillac-brougham-5-0l-250-320amp-high-output-alternator","title":"1987 Cadillac Brougham V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Cadillac Brougham 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":42998140993712,"sku":"7830-9-Brougham-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":42998141026480,"sku":"7830-9-Brougham-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":42998141059248,"sku":"7830-9-Brougham-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42998141092016,"sku":"7830-9-Brougham-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":42998141124784,"sku":"7830-9-Brougham-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":42998141157552,"sku":"7830-9-Brougham-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_67c7146f-fc66-414b-8076-622356afc521.png?v=1701973783"},{"product_id":"1987-oldsmobile-calais-2-3l-cs130-250-320amp-high-output-alternator","title":"1987 Oldsmobile Calais L4 2.3L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Oldsmobile Calais 2.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43008762314928,"sku":"7860-11\/14007-Calais-1987-2.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43008762347696,"sku":"7860-11\/14007-Calais-1987-2.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43008762380464,"sku":"7860-11\/14007-Calais-1987-2.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43008762413232,"sku":"7860-11\/14007-Calais-1987-2.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43008762446000,"sku":"7860-11\/14007-Calais-1987-2.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43008762478768,"sku":"7860-11\/14007-Calais-1987-2.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_e840e3ce-cae4-46f2-a00c-61feb5b664ff.png?v=1702329475"},{"product_id":"1987-oldsmobile-firenza-2-8l-cs130-250-320amp-high-output-alternator","title":"1987 Oldsmobile Firenza V6 2.8L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Oldsmobile Firenza 2.8L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43008762511536,"sku":"7860-7\/14007-Firenza-1987-2.8L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43008762544304,"sku":"7860-7\/14007-Firenza-1987-2.8L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43008762577072,"sku":"7860-7\/14007-Firenza-1987-2.8L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43008762609840,"sku":"7860-7\/14007-Firenza-1987-2.8L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43008762642608,"sku":"7860-7\/14007-Firenza-1987-2.8L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43008762675376,"sku":"7860-7\/14007-Firenza-1987-2.8L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_d028cc9b-802b-4282-a7ff-e4c7d926c7b1.png?v=1702403804"},{"product_id":"1987-pontiac-safari-5-0l-12si-250-320amp-high-output-alternator","title":"1987 Pontiac Safari V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Pontiac Safari 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43008800489648,"sku":"7292-9-Safari-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43008800522416,"sku":"7292-9-Safari-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43008800555184,"sku":"7292-9-Safari-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43008800587952,"sku":"7292-9-Safari-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43008800620720,"sku":"7292-9-Safari-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43008800653488,"sku":"7292-9-Safari-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_38669fd4-b401-4abf-bf0c-cb4d5d90c209.png?v=1702415842"},{"product_id":"1987-chevrolet-blazer-5-0l-250-320amp-high-output-alternator","title":"1987 Chevrolet Blazer V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet Blazer 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035783233712,"sku":"7272-3-Blazer-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035783266480,"sku":"7272-3-Blazer-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035783299248,"sku":"7272-3-Blazer-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035783332016,"sku":"7272-3-Blazer-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035783364784,"sku":"7272-3-Blazer-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035783397552,"sku":"7272-3-Blazer-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_ad5c0ad8-099c-439b-b459-622b14c43076.png?v=1702767222"},{"product_id":"1987-chevrolet-blazer-5-0l-cs130-250-320amp-high-output-alternator","title":"1987 Chevrolet Blazer V8 5.0L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet Blazer 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035783430320,"sku":"7861-11-Blazer-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035783463088,"sku":"7861-11-Blazer-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035783495856,"sku":"7861-11-Blazer-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035783528624,"sku":"7861-11-Blazer-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035783561392,"sku":"7861-11-Blazer-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035783594160,"sku":"7861-11-Blazer-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_f0fe19f5-27cd-4dbc-aef6-988985cef756.png?v=1702767229"},{"product_id":"1987-chevrolet-r10-4-3l-250-320amp-high-output-alternator","title":"1987 Chevrolet R10 V6 4.3L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R10 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035783692464,"sku":"7272-12-R10-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035783725232,"sku":"7272-12-R10-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035783758000,"sku":"7272-12-R10-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035783790768,"sku":"7272-12-R10-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035783823536,"sku":"7272-12-R10-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035783856304,"sku":"7272-12-R10-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_8f1ea896-9093-4eba-839a-e42238c54fea.png?v=1702767236"},{"product_id":"1987-chevrolet-r10-4-3l-cs130-250-320amp-high-output-alternator","title":"1987 Chevrolet R10 V6 4.3L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R10 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035783921840,"sku":"7861-11-R10-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035783954608,"sku":"7861-11-R10-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035783987376,"sku":"7861-11-R10-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784020144,"sku":"7861-11-R10-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035784052912,"sku":"7861-11-R10-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784085680,"sku":"7861-11-R10-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_625752cd-8d2d-42d1-a782-934612d73f40.png?v=1702767246"},{"product_id":"1987-chevrolet-r10-5-0l-250-320amp-high-output-alternator","title":"1987 Chevrolet R10 V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R10 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035784118448,"sku":"7272-3-R10-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035784151216,"sku":"7272-3-R10-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035784183984,"sku":"7272-3-R10-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784216752,"sku":"7272-3-R10-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035784249520,"sku":"7272-3-R10-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784282288,"sku":"7272-3-R10-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_ed739e44-33ec-43cf-9e05-3406837be74d.png?v=1702767251"},{"product_id":"1987-chevrolet-r10-5-0l-cs130-250-320amp-high-output-alternator","title":"1987 Chevrolet R10 V8 5.0L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R10 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035784315056,"sku":"7861-11-R10-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035784347824,"sku":"7861-11-R10-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035784380592,"sku":"7861-11-R10-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784413360,"sku":"7861-11-R10-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035784446128,"sku":"7861-11-R10-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784478896,"sku":"7861-11-R10-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_50c26c37-eb86-4745-ab3d-26dc146ff52b.png?v=1702767261"},{"product_id":"1987-chevrolet-r10-5-7l-250-320amp-high-output-alternator","title":"1987 Chevrolet R10 V8 5.7L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R10 5.7L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035784511664,"sku":"7272-3-R10-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035784544432,"sku":"7272-3-R10-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035784577200,"sku":"7272-3-R10-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784609968,"sku":"7272-3-R10-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035784642736,"sku":"7272-3-R10-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784675504,"sku":"7272-3-R10-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_a0881e09-0849-4eea-96f9-d15026461fda.png?v=1702767268"},{"product_id":"1987-chevrolet-r10-6-2l-250-320amp-high-output-alternator","title":"1987 Chevrolet R10 V8 6.2L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R10 6.2L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035784806576,"sku":"7272-12-R10-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035784839344,"sku":"7272-12-R10-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035784872112,"sku":"7272-12-R10-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784904880,"sku":"7272-12-R10-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035784937648,"sku":"7272-12-R10-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035784970416,"sku":"7272-12-R10-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_11091712-d510-49a3-ba26-426d9a70f132.png?v=1702767283"},{"product_id":"1987-chevrolet-r10-suburban-5-0l-250-320amp-high-output-alternator","title":"1987 Chevrolet R10 Suburban V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R10 Suburban 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035785003184,"sku":"7272-3-R10-Suburban-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035785035952,"sku":"7272-3-R10-Suburban-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035785068720,"sku":"7272-3-R10-Suburban-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785101488,"sku":"7272-3-R10-Suburban-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035785134256,"sku":"7272-3-R10-Suburban-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785167024,"sku":"7272-3-R10-Suburban-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_979716a5-8014-412c-8ec5-4d3e44d57f61.png?v=1702767300"},{"product_id":"1987-chevrolet-r10-suburban-5-0l-cs130-250-320amp-high-output-alternator","title":"1987 Chevrolet R10 Suburban V8 5.0L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R10 Suburban 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035785199792,"sku":"7861-11-R10-Suburban-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035785232560,"sku":"7861-11-R10-Suburban-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035785265328,"sku":"7861-11-R10-Suburban-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785298096,"sku":"7861-11-R10-Suburban-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035785330864,"sku":"7861-11-R10-Suburban-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785363632,"sku":"7861-11-R10-Suburban-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_0008d075-43e9-413e-94f1-2f21d202cf05.png?v=1702767314"},{"product_id":"1987-chevrolet-r20-4-3l-250-320amp-high-output-alternator","title":"1987 Chevrolet R20 V6 4.3L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R20 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035785396400,"sku":"7272-12-R20-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035785429168,"sku":"7272-12-R20-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035785461936,"sku":"7272-12-R20-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785494704,"sku":"7272-12-R20-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035785527472,"sku":"7272-12-R20-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785560240,"sku":"7272-12-R20-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_0bbd6ba0-2735-43e8-844b-d68ef27ad1f9.png?v=1702767320"},{"product_id":"1987-chevrolet-r20-4-3l-cs130-250-320amp-high-output-alternator","title":"1987 Chevrolet R20 V6 4.3L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R20 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035785593008,"sku":"7861-11-R20-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035785625776,"sku":"7861-11-R20-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035785658544,"sku":"7861-11-R20-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785691312,"sku":"7861-11-R20-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035785724080,"sku":"7861-11-R20-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785756848,"sku":"7861-11-R20-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_b856480a-b22e-4308-b9ea-39a53053c027.png?v=1702767330"},{"product_id":"1987-chevrolet-r20-5-0l-250-320amp-high-output-alternator","title":"1987 Chevrolet R20 V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R20 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035785822384,"sku":"7272-3-R20-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035785855152,"sku":"7272-3-R20-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035785887920,"sku":"7272-3-R20-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785920688,"sku":"7272-3-R20-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035785953456,"sku":"7272-3-R20-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035785986224,"sku":"7272-3-R20-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_f02d6a9e-fc4d-439b-a1e9-5343f8718bb5.png?v=1702767337"},{"product_id":"1987-chevrolet-r20-5-0l-cs130-250-320amp-high-output-alternator","title":"1987 Chevrolet R20 V8 5.0L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet R20 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035786051760,"sku":"7861-11-R20-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035786084528,"sku":"7861-11-R20-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035786117296,"sku":"7861-11-R20-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035786150064,"sku":"7861-11-R20-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035786182832,"sku":"7861-11-R20-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035786215600,"sku":"7861-11-R20-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_c7e3c719-b5ea-418e-85b9-aca814fe7fc8.png?v=1702767350"},{"product_id":"1987-chevrolet-v10-4-3l-250-320amp-high-output-alternator","title":"1987 Chevrolet V10 V6 4.3L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet V10 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035786379440,"sku":"7272-12-V10-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035786412208,"sku":"7272-12-V10-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035786444976,"sku":"7272-12-V10-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035786477744,"sku":"7272-12-V10-1987-4.3L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035786510512,"sku":"7272-12-V10-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035786543280,"sku":"7272-12-V10-1987-4.3L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_11f9afa5-21f2-465b-b904-68e16598717b.png?v=1702767355"},{"product_id":"1987-chevrolet-v10-4-3l-cs130-250-320amp-high-output-alternator","title":"1987 Chevrolet V10 V6 4.3L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet V10 4.3L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035786576048,"sku":"7861-11-V10-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035786608816,"sku":"7861-11-V10-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035786641584,"sku":"7861-11-V10-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035786674352,"sku":"7861-11-V10-1987-4.3L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035786707120,"sku":"7861-11-V10-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035786739888,"sku":"7861-11-V10-1987-4.3L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_afce8788-ae66-409d-9039-2089388f944a.png?v=1702767367"},{"product_id":"1987-chevrolet-v10-5-0l-250-320amp-high-output-alternator","title":"1987 Chevrolet V10 V8 5.0L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet V10 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035786772656,"sku":"7272-3-V10-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035786805424,"sku":"7272-3-V10-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035786838192,"sku":"7272-3-V10-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035786870960,"sku":"7272-3-V10-1987-5.0L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035786903728,"sku":"7272-3-V10-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035786936496,"sku":"7272-3-V10-1987-5.0L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_87fecab0-89db-4a5b-8b16-07d5ba63da98.png?v=1702767376"},{"product_id":"1987-chevrolet-v10-5-0l-cs130-250-320amp-high-output-alternator","title":"1987 Chevrolet V10 V8 5.0L cs130 High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet V10 5.0L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a 14.8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug-and-play and must be wired with the one wire connection.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/big-3-wiring-upgrade-kits\"\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035786969264,"sku":"7861-11-V10-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 4-Rib Serpentine Pulley","offer_id":43035787002032,"sku":"7861-11-V10-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035787034800,"sku":"7861-11-V10-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035787067568,"sku":"7861-11-V10-1987-5.0L-250-6003L","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 5-Rib Serpentine Pulley","offer_id":43035787100336,"sku":"7861-11-V10-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035787133104,"sku":"7861-11-V10-1987-5.0L-320-6003L","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-cs130-angle_4b76bb89-d206-4628-8de8-811f2117ffb3.png?v=1702767387"},{"product_id":"1987-chevrolet-v10-5-7l-250-320amp-high-output-alternator","title":"1987 Chevrolet V10 V8 5.7L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet V10 5.7L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035787165872,"sku":"7272-3-V10-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035787198640,"sku":"7272-3-V10-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035787231408,"sku":"7272-3-V10-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035787264176,"sku":"7272-3-V10-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035787296944,"sku":"7272-3-V10-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035787329712,"sku":"7272-3-V10-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_05d4be5c-218d-4b4c-b6fd-d1daa3401fce.png?v=1702767394"},{"product_id":"1987-chevrolet-v10-6-2l-250-320amp-high-output-alternator","title":"1987 Chevrolet V10 V8 6.2L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet V10 6.2L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035787362480,"sku":"7272-12-V10-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035787395248,"sku":"7272-12-V10-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035787428016,"sku":"7272-12-V10-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035787460784,"sku":"7272-12-V10-1987-6.2L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035787493552,"sku":"7272-12-V10-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035787526320,"sku":"7272-12-V10-1987-6.2L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_f0399e84-5d61-4968-818d-c53fab7a3208.png?v=1702767407"},{"product_id":"1987-chevrolet-v20-4-8l-250-320amp-high-output-alternator","title":"1987 Chevrolet V20 L6 4.8L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet V20 4.8L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035787559088,"sku":"7127-9-V20-1987-4.8L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035787591856,"sku":"7127-9-V20-1987-4.8L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035787624624,"sku":"7127-9-V20-1987-4.8L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035787657392,"sku":"7127-9-V20-1987-4.8L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035787690160,"sku":"7127-9-V20-1987-4.8L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035787722928,"sku":"7127-9-V20-1987-4.8L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_3aa6baca-066e-4ee3-9e23-1e736d7116f9.png?v=1702767418"},{"product_id":"1987-chevrolet-v20-5-7l-250-320amp-high-output-alternator","title":"1987 Chevrolet V20 V8 5.7L 12si High Output Alternator","description":"\u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis is a direct fit high-output alternator for the 1987 Chevrolet V20 5.7L. Being a direct fit, this alternator fits directly into your stock alternator location.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePlug:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis high-output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high-output alternator, and the other side will plug into the factory plug.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eNOTE: If you require charging at a certain voltage setpoint, we offer a selection of different voltage regulators that you will need to purchase with the alternator for it to be installed. \u003ca href=\"https:\/\/js-alternators.com\/collections\/regulators\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eView our Regulator Options Here. \u003c\/strong\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003ePulley:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eThis alternator also comes with a smaller pulley, which causes it to spin faster than a larger pulley. This can help the alternator produce its maximum output. With a smaller pulley, it is required to install a 1\/2\" - 1\" shorter belt.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/js-alternators.com\/blogs\/blog\/need-help-finding-shorter-belt-for-your-jsalternators-high-output-alternator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cspan underline=\"\" text-decoration:=\"\"\u003e\u003cstrong\u003eSee this Blog Article for assistance in finding the correct shorter belt.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cspan text-decoration:=\"\" underline=\"\"\u003e\u003cstrong\u003eBig 3 Wiring:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003eWhen Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the \u003ca href=\"https:\/\/js-alternators.com\/products\/big-3-wiring-upgrade-kits?_pos=1\u0026amp;_psq=big+3\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBig 3 Wiring Upgrade Kit\u003c\/a\u003e. It is recommended to use 1\/0 100% copper wires for the upgrade. Our Big 3 Wiring Upgrade Kit is 10% off with a purchase of a JS Alternator; use code \u003cstrong\u003eBIG3DISCOUNT\u003c\/strong\u003e at checkout.\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ca href=\"\" https:\u003e\u003cem\u003eLearn Why The Big 3 Wiring Upgrade Kit is Required for All High Output Alternators\u003c\/em\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"JS Alternators","offers":[{"title":"250 amp alternator \/ V-Belt Pulley","offer_id":43035787854000,"sku":"7272-3-V20-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ V-Belt Pulley","offer_id":43035787886768,"sku":"7272-3-V20-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ Double V-Belt Pulley","offer_id":43035787919536,"sku":"7272-3-V20-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"250 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035787952304,"sku":"7272-3-V20-1987-5.7L-250-adp6003-9801-151","price":399.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ Double V-Belt Pulley","offer_id":43035787985072,"sku":"7272-3-V20-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true},{"title":"320 amp alternator \/ 6-Rib Serpentine Pulley","offer_id":43035788017840,"sku":"7272-3-V20-1987-5.7L-320-adp6003-9801-151","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4866\/6800\/files\/1-12si-v1-angle_97bbe5d2-ac48-4e41-8b8a-fbcaf4a2002f.png?v=1702767429"}],"url":"https:\/\/jsalternatorsdealers.com\/collections\/1987\/brougham.oembed","provider":"JS Alternators","version":"1.0","type":"link"}