Power up your vehicle with this robust alternator, specifically designed for a seamless fit on a range of GM models, including the Chevy Trailblazer, Buick Rainier, GMC Envoy, and Isuzu Ascender from 2007 to 2009. With a 150 A capacity and a 12 V output, this alternator assures you of a reliable electrical power source for your vehicle's needs. Crafted with precision, the unit features an internal fan design and a clockwise rotation to ensure efficient operation. The 6-groove pulley interface allows for a smooth belt tension and reduces harmonic vibrations, contributing to the longevity of your vehicle's engine and alternator. Note that this alternator comes with the pulley included for convenience and ease of installation..