SKU: 25-1085
Speed Engineering Mustang Coyote longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Mustang Coyote longtube headers are mandrel bent, tig welded, and feature natural stainless steel construction. All of our Mustang Coyote longtube headers have been dyno proven. We stand behind our Mustang Coyote longtube headers in saying you will not find a better fitting, quality built, budget header for your vehicle.
Features include:
Vehicle Applications:
Note: Early Gen 1 (2011) and some Gen 3 (2018+) Coyote engines might use M10x1.25 header bolts. Late Gen 1 (2011) and Gen 2 (2015-2017) Coyote engines will use M10x1.5 header bolts. We recommend double checking your thread pitch for confirmation.
(Warning) This is a RACE ONLY product manufactured and sold for installation on vehicles to be used solely for competition purposes. Once this part is installed, the vehicle may never be used, or registered or licensed for use, on a public road or highway. If you install this part on your vehicle and use the vehicle on a public road or highway, you will violate the Clean Air Act 203(a)(3), 42 U.S.C, 7522(a)(3) and may be subject to personal civil or criminal liability.

Just wondering why you can’t ship in California even if it’s going on a track car.
The easiest most complete kit I've ever worked with. Done all the nice upgrades(o2 extensions MLS gaskets and band clamps) bolt on. Little room as far as clearance but look what you're putting on. I'd buy again. Purchased through another vendor(mont) as the official site was out of stock at the time. I cannot recommend this kit enough. It's so complete and nice.
Fits pretty good, driver side I had to shave down engine mount bolt. Passenger side close to the fire wall, you can try shifting engine over or some light messaging on header. Probably the best fitting header thats not over 2k or custom made. I would just use all the supplied header bolts. Some resuse any of the studs not worth the time to figure it out.
It's a header swap, so it will be tight. I just completed header swap on a 2023 mustang gt "working on mid-pipe to rear axle now". Research shows passenger side is the hard side "it is". The problematic areas are header bolts, and how to access them "specifically the bottom row outer edge, and upper further towards the front". The passenger side motor mount top nut is also a pain to get to. overall header swap was long but no fitment issues.
Sound really good and fit right in