Kooks 1-3/4" x 3" stainless long tube headers for the stock to lightly built 2011-2014 Coyote. The 1-3/4" primary is the sweet-spot sizing for a stock or mildly modified Coyote — broadens the torque curve and opens up the top end where the factory manifolds choke down, without giving up daily drivability. 304 stainless construction with 3/8" thick laser-cut flanges resists warping under heat cycling. Mandrel-bent primaries preserve flow through every curve.
Fits 2011-2014 Ford Mustang GT with the 5.0L 4V Coyote. Requires a Kooks X-pipe or H-pipe with a 3" inlet to complete the exhaust connection. Round port, stock bolt pattern bolts directly to Coyote cylinder heads.
Kooks Headers & Exhaust has been hand-building stainless headers and exhaust systems in Statesville, North Carolina since 1962. Every Kooks header is welded by experienced fabricators in the same shop where the company's racing legacy was built. 304 stainless construction handles thermal cycling and corrosion that destroys mild steel headers in a few seasons.
Includes PY-8025-AL gaskets and BK109, BK112, and BK114 bolt kits required for installation. Pair with a Kooks 3" X-pipe (PN 11413100) or H-pipe (PN 11413400), plus an appropriate cat-back downstream.
