Here at JS Alternators, we are a first-class manufacturer of top quality high output alternators, taking innovation to the next level. We have been supplying our customers with premium alternators ranging from 240 to 400amps since 2013.


Our Team

JS Alternators is a proud family-owned business founded by Jonathan Smith. Jonathan's passion started in car audio competitions in the 90s, and in 2013 he decided to take his passion to the next level. What started in a garage, shipping merely five alternators each week, has turned into a thriving, ground-breaking company that now ships hundreds of orders weekly. Jonathan's team consists of knowledgeable, loyal employees who have been extensively trained in the alternator business, ensuring top quality products from our family to yours.

Our Style

Here at JS Alternators all of our products are American-made! As a small business, each and every customer is important to us. Our motto is to provide high quality products, as well as high quality customer service. Each employee is cross-trained in every department. This ensures that every order exceeds customer expectation.

Our Promise

Our promise is to continue to provide you with the best high output alternators in the business and superior customer service. Here in the JS Alternators family we keep our promises!


Someone recently bought a

We use cookies to improve your experience on our website. Read about how we use cookies in our Privacy Policy. By browsing this website, you agree to our use of cookies. privacy policy

Your cart