1997-2000 Cadillac DeVille 4.6L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Chevrolet For BMW 3 318d -

For BMW 3 318d - engine codes M47 D20

1 Set of Intake Bridge:

For 2011-2015 GMC Sierra 3500HD 6

Actual Displacement: 199cc

Removal of the DPF

1997-2000 Cadillac DeVille 4.6L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 Chevrolet For BMW 3 318d -Product 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