High Output Alternators Built in USA | JS-Alternators – JS Alternators

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Featured Products

Sale

Universal Big 3 Wiring Upgrade Kit (4ft 1/0 Positive, 1 4ft 1/0 Ground, 1 3ft 1/0 Ground)

$119.99 $99.00 Save $20.99

Sale

Universal Big 3 Wiring Upgrade Kit (6ft 1/0 Positive, 1 4ft 1/0 Ground, 1 3ft 1/0 Ground)

$239.00 $139.00 Save $100.00

Sale

2012-2021 Jeep Wrangler 250 to 425amp Alternator.

2012-2024 Jeep Wrangler V6 3.6L High Output Alternator

$499.00 from $399.00 Save $100.00

Sale

2006-2022 Chevrolet Silverado 1500 V8 5.3L High Output Alternator

$499.00 from $399.00 Save $100.00

Sale

1996-2024 GM Billet High Output Alternator (Black)

$749.00 from $649.00 Save $100.00

Sale

1996-2024 GM Billet High Output Alternator (Standard)

$749.00 from $649.00 Save $100.00

Sale

1996-2024 GM Billet High Output Alternator (Blue)

$749.00 from $649.00 Save $100.00

Sale

2020-2022 Polaris Slingshot High Output Alternator

$629.00 from $529.00 Save $100.00

Sale

Dual Alternator Bracket Kit – 1999-2013 Chevy 4.8L, 5.3L, 6.0L, 6.2L V8 Vortec Engines (Includes 1 Alternator)

$1,248.00 from $923.00 Save $325.00

Sale

Dual Alternator Bracket Kit – 1999-2013 Chevy 4.8L, 5.3L, 6.0L, 6.2L V8 Vortec Engines (Includes 2 Alternators)

$1,897.00 from $1,524.00 Save $373.00

Sale

Triple Alternator Bracket Kit – 2000-2013 GM/Chevy Trucks 5.3L, 4.8L, 6.0L, 6.2L V8 (Includes 3 Alternators)

$2,646.00 from $2,321.00 Save $325.00

Sale

Triple Alternator Bracket Kit – 2000-2013 GM/Chevy Trucks 5.3L, 4.8L, 6.0L, 6.2L V8 (Includes 2 Alternators)

$1,997.00 from $1,672.00 Save $325.00

Finding the perfect fit for your vehicle

Every vehicle is unique, and so are its power needs, Discover the perfect high-output alternator tailored to your vehicle's specifics. Start your search now and let's power up your journey together.

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UPGRADE YOUR DRIVE: ESSENTIAL ACCESSORIES & BIG 3 WIRING SOLUTIONS

High-output alternators demand more than factory wiring can safely handle. That’s why a Big 3 wiring upgrade is required with all JS High Output Alternators. These kits are designed to eliminate voltage drop, reduce heat, and ensure your alternator can deliver its full rated output reliably.

Shop Big 3 Wiring & Accessories

High Output Alternators Built in USA | JS-Alternators