Every system is dyno- and race-tested to ensure your Mustang's 4.6L 3V engine inherits the best long tube headers on the market. This means Kooks can guarantee their exhaust makes the most horsepower and torque in the industry. Kooks long tubes are made of aircraft quality T304 stainless steel. The 1-3/4" tuned primaries merge into 3" collectors to create the smoothest flowing path. Every collector features Kooks' scavenging spike to ensure maximum flow. Laser-cut 3/8" thick flanges ensure no warping or bending occurs, and each port is hand ground to make sure they are perfectly smooth so there is no exhaust constriction. Kooks systems are bolt-in and never require any cutting or welding, and include O2 extensions and all necessary hardware.
Features and Benefits:
- 3" Collectors
- Made in the USA
- Enhanced Airflow
- T304 Stainless Steel Construction
- Bolt-In Installation
- O2 Extensions and Hardware Included
- Dyno- and Race-Tested
*Must be used with a Kooks mid-pipe.
- 2005-2010 GT Mustangs.
*Fits 2005-2010 Mustang GTs with either a manual or automatic transmission.
*Mustangs with an automatic transmission require extra O2 extensions.