2007 GMC Sierra 1500 Classic 6.0L 250-320-370-400amp High Output Alternator
2007 GMC Sierra 1500 Classic 6.0L 250-320-370-400amp High Output Alternator - 320 amp alternator is backordered and will ship as soon as it is back in stock.
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This is a direct fit high-output alternator for the 2007 GMC Sierra 1500 Classic 6.0L. Being a direct fit, this alternator fits directly into your stock alternator location.
This high-output alternator comes with a factory style plug so that your OEM plug will plug directly into the alternator. Therefore, with an OEM style regulator, it will have a factory voltage set point.
NOTE: 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. View our Regulator Options Here.
This 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.
Big 3 Wiring:
When Upgrading to a High-Output Alternator, it is required to upgrade your wiring with the Big 3 Wiring Upgrade Kit. 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 BIG3DISCOUNT at checkout.
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