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3 series E90/E91 3200D/325d/330d/330xd 2004-2008
Significantly reduces exhaust back pressure
For 2009-2012 BMW 750i
Fit for Suzuki DR-Z400 2000-2021
1997-2001 Pontiac Grand Prix 3.1L/3.8L Exhaust Manifold 4 Cyl W/ Heat Shield 674-509 NEW2209 3 series E90/E91 3200D/325d/330d/330xd 2004-2008Product 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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