Here at JS Alternators, we take pride in our work. We are a first-class manufacturer of top quality alternators. JS Alternators began building high output alternators in 2013. Our units range from 240 to 390+ amps, each one created custom! We deliver nothing but outstanding reliability to our customers. JS Alternators is a product of the incredibly skilled and professional team that works behind the scenes. Our staff members are the best at what they do, all of them having meaningful training and certification. They are top-of-the-line experts who are able to not only avail you with the right alternator but guide you patiently in all the knowledge you need.