Headers for 1975-2000 Class A Motorhomes. Part numbers THY-303Y-C. These are set up for dual exhaust (no-y-pipe included) and are not CARB legal unless your truck was originally equipped with dual exhaust.
These Doug Thorley Tri-Y headers are constructed of 14-gauge 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!