POWER UP WITH THE BEST
HIGH OUTPUT ALTERNATORS

Select Your Vehicle Below

Your #1 Source for High Output Alternators

Select Your Vehicle Below

Testimonials

★★★★★

Shout out to JS alternators there the only ones who made a high output for my model car. Without it there’s no way I could run my current system on my stock alternator.

Dylan Morton
★★★★★

I highly recommend JS Alternators The craftsmanship is beautiful and they have great customer service everyone is so friendly and helpful. Fast shipping too. Satisfied customer for life!!!

Shelley Moore
★★★★★

JS alternators got me taken care of with Dual 400 amp illusion violent alts and I'm in love the customer service and quality is amazing..

Brandon Fassbender
★★★★★

Received two Alternators from JS and don't regret one moment of it. They have been great and when playing my system as hard as I can the Alternators have been able to keep up with all the power needed!

Cody F.

Some of Our Partners

JS Alternator 8" Decal - JS Alternators

Find 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.
Shop Alternators

Upgrade Your Drive: Essential Accessories & Big 3 Wiring Solutions

Shop Big 3 Wiring & Accessories