Increase Power & Performance
Swap out your factory 1999-2004 Mustang exhaust manifolds with these Flowmaster shorty headers for improved power and performance. These headers directly replace your restrictive manifolds to give you better exhaust flow for increased horsepower and torque. Each set of BBK headers are dyno tuned to give you the best power for your Mustang.
High Quality Construction
These Flowmaster shorty headers are manufactured from stainless steel and are ceramic coated for maximum durability. They feature 1-5/8 in. primary tubes, 3/8 in. thick laser cut flanges and factory collector connections, ensuring a direct-fit, leak free installation. 100% bolt on for factory exhaust. CARB EO # D-698.
This product has been granted a California Air Resources Board (CARB) exemption, an E.O. number, or is a direct or consolidated replacement part. It is 50-state legal, per the application guide.
Flowmaster - The Exhaust Technology Company Flowmaster operates the only exhaust Research & Design facilities of its kind in the world, centered around the SuperFlow SF-7100 engine dynamometer complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dyno's.
Through use of these dyno's, Flowmaster's engineering staff can track the complete engine cycle in millionths of a second and can obtain exact technical data of each degree of cam rotation, from induction to the tip of the exhaust system, while also showing the power numbers that really matter, the power numbers "to the ground."
Flowmaster also utilizes Spectrum Analyzers to fine "tune" the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones. Flowmaster's dedication to quality is what makes them the exhaust industry leader for Latemodel Mustangs and SVT Lightnings!
Testimonial: Awesome products and great service!!!!
Your website was great to restore my 1991 LX mustang. I found everything I needed including great tech articles and even had to return the product with no hassle at all prices were great shipping go superfast of course free could not of asked for anything more. Once again great job and I will be purchasing more in the future.