Quick view New Mechman 400 Amp Black Billet High Output Alternator For GM Truck / SUV With OEM STRETCH BELT Now: $699.00 MSRP: Was: This unit comes equipped with a smaller 1.75-inch diameter alternator pulley but will NOT require a shorter belt! Not recommended for sustained use above 5,000 RPM engine speed(racing). The Elite series offers the highest possible… Add to Cart The item has been added Add To Compare