1976-1986 Jeep CJ7 L6 4.2L 12si High Output Alternator

From $399.00
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$399.00
$399.00 $499.00
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Fitment:

This is a direct fit high-output alternator for the 1976-1986 Jeep CJ7 4.2L. Being a direct fit, this alternator fits directly into your stock alternator location.

Plug:

This 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.

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.

Pulley:

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.

See this Blog Article for assistance in finding the correct 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.

Materials

Our Big7 Kits are built with 100% fine strand SAE rated pure copper wire and a flexible J1127 jacket. Ends are crimped with a gas-tight electromechanical crimp rated for 700lbs of pull force. Protected by marine grade heatshrink for corrosion resistance.

Kit Includes

This All-In-One Big7 Battery Cable Replacement Kit includes everything you need to replace your old worn out cables and battery terminals. Each kit include vehicle specific replacement wires, battery terminals, heatshield where needed and protective wrapping as needed.

1976-1986 Jeep CJ7 L6 4.2L 12si High Output Alternator

$399.00

Customer Reviews

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  • Get Creative

    We offer tech flex wrap in 17 different colors to customize your Big7 Battery Cable Kit.

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Testimonials

  • Testimonial

    Everything was great. The cables were all labeled clearly, they were the correct lengths, and the terminal ends fit perfectly. The battery terminals are well made, and make disconnecting the cables quick and easy. Overall, a definite improvement over the factory cables and terminals. Great product!

    Eric H.
    Jeep Cherokee XJ Kit

  • Testimonial

    The ends of each wire being labeled really helped out. Good quality stuff. Seems right. Definitely fixed my original cables that were so corroded the insulation was cracked and falling apart.

    Joe A.
    Dodge Cummins Gen 3 Kit

  • Testimonial

    I bought the 1/0 GA kit, easy install. Be careful with the plastic white bracket under the the front of engine block (going to starter). Slow and steady. Sturdy kit, well made and easy to install. Give them a call or shoot them an email, the customer service team here is really helpful and will answer your questions. Paul was ready to help!

    Liam S.
    Toyota 4Runner Gen3 Kit

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