1999-2003 Ford F-150 5.4L V8 Exhaust Manifold Racing Header GMC Exhaust Manifolds Cylinder Head Cover Gasket: 12391-KCY-671

Cylinder Head Cover Gasket: 12391-KCY-671

For 06-11 Audi A3 2

2 * 1 / 4 "- 20x 1

Tensioner Gasket: 12837-19B10

For Volkswagen For Jetta MK4        2005 TDI - BEW FWD

1999-2003 Ford F-150 5.4L V8 Exhaust Manifold Racing Header GMC Exhaust Manifolds Cylinder Head Cover Gasket: 12391-KCY-671Product 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