The DORMAN 674-522 Exhaust Manifold is a high-quality replacement part designed specifically for GM trucks with a 5.3L engine, produced between 2001-1999. Made by the reputable brand Dorman, this exhaust manifold ensures proper fit and reliable performance. With the manufacturer part number 674-522, this product serves as a crucial component in the exhaust and emission systems of the vehicle, guaranteeing optimal functionality and durability for a smoother driving experience.