Cummins ISB 6 Cylinder 6.7 L Diesel 250 hp Engine, 2013 US EPA Label, Requires Diesel Exhaust Fluid, 4704 Engine hrs, Automatic Transmission, 10000 lb Front Axle, 21000 lb Rears, 31000 lb GVWR, 11R22.5, Air Ride Suspension, 177 in Wheelbase, 11 ft 4 in x 87 in Bed, Fuel Tank