AFE Twisted Header - Porsche Carrera/Carrera S/4S (997.1)(2005-08) / Carrera S/4S (996)(2002-04)

Features: 1-3/4" 16-gauge 304 stainless steel mandrel-bent tubing with a brushed-finish for unrestricted flow 3-to-1 mitered merge collectors eliminates flow-block turbulence seen on formed collectors Optimized equal tube lengths improve flow and performance 100% hand TIG-welded construction ensures optimal strength and durability Dyno tests resulted in up to 17 horsepower and 24 lbs. x ft of torque for power you can feel. Mitered Collectors 3-to-1 mitered merge collectors decrease turbulence and increase exhaust velocity. The result is increased horsepower torque and improved throttle response. Heavy Duty Flanges: 3/8"" thick flanges prevent warpage to ensure a leak-free seal over the life of the vehicle. Optimized Equal Tube Lengths: Each primary tube was specifically engineered and tuned at equal lengths for optimum efficiency resulting in improved torque and performance. Factory Mounting Locations: These headers retain your stock catalytic converters and are a direct bolt-on installation which requires no cutting or drilling to provide a hassle-free installation. aFe headers are engineered and manufactured in our Corona California manufacturing facility. Also Fits: Porsche 911 (997.1) Carrera 4 H6-3.6L (2005-2008) 911 Carrera S & Carrera 4S 997.1 H6-3.6L/3.8L (2005-2008) 911 Carrera S & Carrera 4S 996 H6-3.6L (2002-2004) Note: This header is not currently CARB exempt and is not available for sale in California or for use on any vehicle registered with the California Department of Motor Vehicle."