Quality Construction. Manufactured from 1-5/8" mandrel bent 304 stainless steel tubing Kooks Long Tube Headers are TIG welded for strength, and feature a leak-free ball flange design to fit perfectly into the included 2.5" diameter 304 stainless steel Shorty X-pipe for excellent exhaust flow and performance.
Recommended Upgrade. To realize the full power potential that this Header and X-pipe combo kit has to offer, AmericanMuscle recommends a custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.
Application. This Kooks Header and matching Off-road X-pipe combo kit is designed specifically for the 2005 to 2010 4.6L GT Mustangs equipped with an automatic transmission.
Technical Note: This Kooks product is intended for off road use, and is not legal for use in emission restrictive states.