This is a high-quality, brand new alternator designed specifically for Chevy Silverado and GMC Sierra 1500/2500HD/3500HD trucks from 2014 to 2019 with engines ranging from 5.3 to 6.6 liters. With a voltage output of 12V and amperage of 150A, this alternator is a performance part that ensures reliable power generation for your vehicle. Made with an aluminum housing and pure copper flat coil, this alternator is durable and efficient, providing a polished finish for a sleek appearance. It is a direct fit with dimensions of 6.1 x 6.5 x 6.5 inches and weighs 12.8 lbs.