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For GMC Sierra 1500 HD 2001-2003
Anodized piston dome provides superior heat resistance and longer lifespan
0L Twin Turbo 2007-2010
Cylinder Head
Outlet Diameter: 2
1964-1987 Chevy Impala Small Block Manifold Headers Dodge Car Exhaust Pipes & Tips For GMC Sierra 1500 HDProduct Overview: 1. Exhaust headers are a key upgrade for boosting engine performance by improving airflow. Unlike restrictive factory exhaust manifolds, performance headers give each cylinder its own dedicated exhaust path, reducing back pressure and improving exhaust flow. 2. By minimizing exhaust interference between cylinders, headers help increase horsepower and torque. When paired with a high performance cold air intake and a cat back exhaust
