Cummins ISX15 6 Cylinder 15.0 L Diesel 450 hp Engine, 2016 US EPA Label, Requires Diesel Exhaust Fluid, 21353 Engine hrs, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12350 lb Front Axle, 40000 lb Rears, 52350 lb GVWR, Air Ride Cab, High Rise Sleeper Cab, Bunk Beds, Bunk Heater, Aluminum Wheels, 295/75R22.5, 226 in Wheelbase, Dual Fuel Tanks