This high-output alternator from Mechman is designed to power the electrical demands of modern trucks and SUVs. Generating 320+ amps, it supplies significantly more current than stock alternators to handle additional accessories like winches, lighting, audio systems and more. Compatible with GM trucks from 2005-2013. It plugs directly into existing wiring harnesses for an easy installation. With oversized cooling fins and output terminals, it maintains lower operating temperatures to withstand heavy loads. Boosting electrical power for trucks, this heavy duty alternator ensures accessories have the continuous supply needed to perform at their best.