American Racing Longtube Header Kit
Increase horsepower and torque in your 1999-2004 Mustang Cobra or Mach 1 with a high quality set of longtubes from American Racing Headers! ARH set the standard for quality in the exhaust world with their top notch products. This longtube header kit features 1 3/4" primaries to provide maximum flow over the factory manifolds. The headers flow into a high flow catalytic x-pipe to replace the restrictive factory cats. The fit and finish of these American Racing Headers is second to none!
American Racing Headers proudly makes all of their products in the USA. This 1999-2004 Mustang header and mid-pipe kit is constructed entirely with U.S. made 304 stainless steel tubing. These headers start off with 3/8" thick flanges with tig-welded and hand ported inlets. The 1 3/4" primary tubes are all one piece design for 100% leak-free performance. These primary tubes flow into the included high flow 3" catalytic X-pipe. This combination will maximize flow, horsepower, and torque!
This longtube header and x-pipe kit includes a high flow catalytic x-pipe. The catalytic converters in this kit are 49 state legal and will NOT pass California emissions testing.
ARH recommends reusing factory gaskets or replacing with Ford OEM set.