The ACDelco Reman Alternator 10463964 321-1308 is a high-quality replacement part for car and truck alternators. Made by the trusted brand ACDelco, this alternator is designed for 12V systems with 100A of amperage. It features a pulley included, making installation easier. Proudly manufactured in the United States, this alternator ensures reliability and efficiency for your vehicle's electrical system. Perfect for those in need of a dependable alternator for their vehicle, this ACDelco product is a great choice for car enthusiasts and mechanics alike.