Kooks 1-7/8" Stainless Steel Shorty Headers for 2011, 2012, 2013 and 2014 GT Mustangs and 2012-2013 Boss 302 Mustangs.Unleash the full potential of your Mustang's 5.0L 4V engine with the best shorty headers on the market. Kooks shorty headers are made from aircraft quality T304 stainless steel. Kooks only uses the highest quality stainless steel unlike their competitors. 1-7/8" tuned primaries merge into a stock style collector so you can bolt up factory style mid-pipes. Kooks shorty headers are a direct replacement for the factory exhaust manifolds. Laser cut 3/8" thick flanges ensure no warping or bending occurs. 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. O2 extensions and all necessary hardware are included.
Each Kooks exhaust system is designed specifically for the engine and vehicle it is built for. Kooks utilizes the firing order of the engine when designing their exhaust tubes. The most technically advanced equipment is used when designing Kooks exhaust systems. Every system is dyno and race tested to ensure the results are up to Kooks' expectations. This means Kooks can guarantee their exhaust makes the most horsepower and torque in the industry. All Kooks products are manufactured in a 45,000 square foot state of the art facility located in Statesville, North Carolina.
Kook's Headers has been in business since 1962. With over 50 years of header and exhaust knowledge, you're guaranteed the best quality products. Kooks is involved with all types of automobile racing and makes parts for the ARCA, Lucas Oil Series, IMCA, URA and many other oval style racing series. Kooks is also an official contingency partner with NASCAR. Drag racing was the back bone of Kooks but they also supply cars in the SCCA and NASA. Kooks is a top supporter of the NHRA, ADRL, NMCA, NMRA, Fun Ford Weekend, PTRA and many more.
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They feature 3/8th laser cut flanges leading to 1 7/8th primaries into a 3 inch collector. They have the factory oxygen sensory locations and will hook up to your factory or after market cap back exhaust system. Kooks includes two sets of header bolts, as they did come with two different threads. They also include a brand new set of gaskets for installation.
These Kooks shorty headers are a great choice to make horsepower if you're looking for a stock replacement style header for your 2011 through 2014 5.0 liter Mustang.