2000-2001 Chevrolet Impala 3.4L/3.8L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Volkswagen Car Exhaust Pipes & Tips Preinstalled Intake/ Exhaust valves

Preinstalled Intake/ Exhaust valves

CNC-milled from aircraft-grade billet aluminum for strength and precision

4L 391ci OHV V8 Powerstroke Turbo 2008-2010

1 * Rear Block Off Plate

2000-2001 Chevrolet Impala 3.4L/3.8L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Volkswagen Car Exhaust Pipes & Tips Preinstalled Intake/ Exhaust valvesProduct 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