Cummins ISB 6 Cylinder 6.7 L Ultra Low Sulfur Diesel 220 hp Engine, 2013 US EPA Label, Requires Diesel Exhaust Fluid, Automatic Transmission, 10000 lb Front Axle, 21000 lb Rears, 26000.0 lb GVWR, 295/75R22.5, Spring Suspension, 283 in Wheelbase, Supreme 26 ft x 102 in Wide x 96 in High Body, Liftgate