1999-2003 Ford F-150 5.4L V8 Exhaust Manifold Racing Header GMC Exhaust Manifolds Cast pistons feature a high

Cast pistons feature a high silicone content for added strength and durability

For 06-11 Audi A3 2

3L 2000-2006

Cylinder Head Cover Gasket: 12391-KCY-671

1999-2003 Ford F-150 5.4L V8 Exhaust Manifold Racing Header GMC Exhaust Manifolds Cast pistons feature a highProduct 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