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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
Bore Diameter: STD 52
For BMW 3 (E46) 318d - engine codes M47N 204 D4 - 2003
Kit is designed for big bore size 72
For BMW E88 120d
Cylinder Body
1997-2001 Buick Regal 3.8L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 yy2303FPL Bore Diameter: STD 52Product 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
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