1997-2000 Cadillac DeVille 4.6L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Chevrolet Actual Displacement: 199cc

Actual Displacement: 199cc

Anodized piston dome provides excellent heat resistance and a longer lifespan

For 2011-2015 GMC Sierra 3500HD 6

Material: 6061-T6 Aluminum & Stainless Steel Bolt

For Ford F-550 Super Duty 6

1997-2000 Cadillac DeVille 4.6L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Chevrolet Actual Displacement: 199ccProduct 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