Virtually indestructible 100 percent stainless TorqueTubes maximize exhaust extraction, unleashing gobs of torque. Exclusive tuned-length, parallel 5-tube exhaust manifolds designed specifically for motorhomes. 5-Year Limited stainless steel construction never cracks or blows. Mandrel-formed tubes tune exhaust flow for maximum torque. Patented PowerPickle pulse converter maximizes exhaust extraction. No sealant or gaskets required. 5/8 inch thick flanges never warp. Flanges welded both sides, then milled flat. Includes stainless Y-pipe assembly with seamless Y-collector. Includes necessary heat shielding. 5-Year Limited Warranty Torque Tube Exhaust Header System for use with 1997-2003 Ford 6.8L V-10 Class-C Motorhome, E-Super Duty, No EGR Key Features: Virtually indestructible 100 percent Stainless Steel Mandrel-formed tubes tune exhaust flow for maximum torque Maximize exhaust extraction Flanges welded on both sides, then milled flat Seamless high-velocity collector Pulls exhaust and slashes backpressure Exclusive tuned-length parallel 5-tube design Patented PowerPickle pulse converter 5/8 inch thick flanges won't warp or flex Includes Y-pipe and heat shielding US Patent #8,468,812 B1 50 State Compliant CARB E.O. D-161-76