Headers for 2004-2010 F150 / F250 / F350 / Expedition with a 5.4L V8. Part number THY-221-SS-C (old part number THY-221-C). These shortie headers are set up to replace your factory exhaust manifolds and are CARB legal.
These Doug Thorley headers are constructed of 14-gauge stainless steel tubing with 3/8-inch flanges to give you the best quality you can get in a header! Plus they are ceramic coated to give a lifetime of performance!