Cummins 6 Cylinder Diesel Engine, Requires Diesel Exhaust Fluid, Allison Automatic Transmission, 10000 lb Front Axle, 21000 lb Rears, 25999.0 lb GVWR, 11R22.5, Spring Suspension, 178 in Wheelbase, 12 ft Long x 3 ft 6 in High Steel Body, Flat Bed, Electric Roll Tarp, Pintle Hitch