Our newest addition to our billet aluminum products. This pulley is considered a power pulley because it has a larger diameter than a stock pulley, which slows the fan down and creates more horsepower. This pulley has been dyno-test proven to add an extra 2 horsepower to a stock 1600cc engine over the stock alternator/generator pulley! The diameter of the pulley is 4.950" and has been lightened to weigh the same as a stock steel pulley. Just like the other pulleys we make, these are made out of billet 6061 T6 aluminum and are hard anodized for wear. Comes with bonnet, washer, chrome nut, and shims. *This pulley is recommended for off-road use only because of the reduction in cooling* 64-4147