aFe POWER Twisted Steel Headers deliver an astounding 12 HP and 16lbs. x ft. TQ while outflowing the factory exhaust manifolds. The headers are constructed of near equal length 1-5/8 IN 16-gauge 304 stainless steel tubing with 3/8 IN thick CNC machined flanges to ensure a leak free seal. To eliminate dead space that can cause turbulence and hinder flow that formed collectors are prone to produce, true merge collectors and optimized tube lengths are used for true pulse control technology improving flow and performance. 100% TIG-welded, the smooth curves and increased diameter of this header helps remove restriction and keeps exhaust gas flowing smoothly for improved performance and durability. All components are supplied for a hassle-free installation with no modifications necessary.
Tig-Welded: 100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.
Retain Factory Sensors:
aFe has designed this system to retain all your factory sensors for a hassle free installation.
Mitered collectors not only extend the tube lengths and decrease turbulence, but provide optimal exhaust scavenging. The result is increased horsepower, torque and improved throttle response.
CNC Machined Flanges:
Flanges are CNC machined not only to be visually appealing but for a precise fit and leak-free seal.
Brushed 304 SS Construction:
These headers are constructed of durable CNC mandrel bent brushed 304 stainless steel tubing for maximum performance, corrosion resistance and strength eliminating cracking.
This system requires an aftermarket electronic module to work properly with the vehicle.
This is a Race Only product that is to be used solely for competition, it cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. To complete the purchase of this item, aFe POWER competition acknowledgement/liability release form must be filled out and submitted.
All aFe exhaust systems are engineered and manufactured in our Corona, California facility.
Year Make Model SubModel Engine Fuel 2001-2006 BMW M3 (E46) S54 Engine L6 3.2L Gas 2001-2002 BMW Z3 M Coupe (E36/E38) S54 Engine L6 3.2L Gas 2001-2002 BMW Z3 M Roadster (E36/E37) S54 Engine L6 3.2L Gas 2006-2008 BMW Z4 M Coupe (E86) S54 Engine L6 3.2L Gas 2006-2008 BMW Z4 M Roadster (E85) S54 Engine L6 3.2L Gas
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