Mr. Gasket Alternators are built using all new components, not remanufactured, and exceed OEM specifications for maximum performance and durability. Features: 1 wire Made with Premium all new components (Not remanufactured) Heavy duty Copper Windings, Diodes & internal Voltage Regulators Ideal for HP, Muscle Cars, Truck & Daily Drivers Hand Assembled & Tested Attractive housing and finish options Includes pulley