Exhaust performance headers manipulate the air flow with the performance-robbing exhaust manifold that came with your car., 2., Headers provide each cylinder with its own mini exhaust pipe, which means exhaust headers prevent interference among cylinders; thus, the back pressure that occurs in common exhaust manifolds. That's where exhaust headers is significant as the first revenue of an exhaust system. When cylinders don't have to fight with each other to expel their exhaust, they can put more power through the wheels, pushing the vehicle. Product Name: Exhaust Header , Material: Stainless Steel Specifications:Product Name: Exhaust HeaderFitment Type: Performance/CustomMaterial: Stainless SteelOutlet Size: 2Primary Tube Size: 1., 75Number of O2 Sensor Locations: 4Head Flange Thickness: 7/16Outlet Flange Thickness: 3/8Header features 6-2-1 light weight piping designFit for BMW Engine 2., 5L, 2., 8L and 3., 0L L6Fitment:Fit for BMW E46 (323/328) 1998-2006 (2006 coupe only) NO 325/330, not long enough(except 1999 328i)Fit for BMW E39 5 Series 2., 5L/2., 8L/3., 0L Engines 1997-2000Fit for BMW Z3 2., 5L/2., 8L/3., 0L Engines 1996-2002Package included:1 * Exhaust Header Kit (same as picture show) Kaufen Sie Artudatech Auspuffkrümmer Stainless Exhaust Header Manifold Fit for BMW E46 323i 328i Z3-528I M54 E93 E94 im Auto & Motorrad-Shop auf . Große Auswahl und Gratis Lieferung durch ab 29 Collecteur Performance Moteur M54 2.5l 2.8l Collecteurs D'échappement Pour BMW - Série 3 (E46 Exhaust Header Acier Inox Bmw E46 323i 328i M57 - M57N / 2.5 et 3.0 diesel convient également pour Range Rover équipé d'un moteur BMW. Fabriqué en fer ductile très résistant avec revêtement pour des températures élevées