Prepare your vehicle to be Ready for the Road Ahead , with the Delco Remy 28SI 12V 200A J180 Short Hinge Mount Alternator that supplies a stable source of power to all of its electric accessories. To store energy in the battery, this replacement alternator pairs with the serpentine belt to convert the mechanical energy from the engine into a usable current of electricity. Fashioned with tried and tested wiring to keep your headlights, radio, power steering, and more operating at their best. FleetPride is your First Click in Heavy Duty .