1999-2006 GMC Sierra 4.8L, 5.3L Manifold Headers Generic Pontiac to clarify

to clarify

5L 2003-2006 (NOT for 35th Anniversary Edition 2005)

4 * Engine Piston Pin

Engineered and tested to meet or exceed OEM standards for fit and performance

Fit for Honda C70 Passport 70 1980-1983

1999-2006 GMC Sierra 4.8L, 5.3L Manifold Headers Generic Pontiac to clarifyProduct 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