Decat Exhaust Manifold – BMW 3 Series E90 E91 320i 2.0 05-07
Manufactured from highest quality T304 grade stainless steel Direct replacement for the original manifolds - both gaskets included CNC machined flanges for strong, solid support and an accurate fit Improves gas flow by removing the restrictive catalytic converter 4-1 design to improve gains at the top end of the rev range