Cummins 6 Cylinder Ultra Low Sulfur Diesel Engine, 2015 US EPA Label, Requires Diesel Exhaust Fluid, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 13200 lb Front Axle, 40000 lb Rears, 53200.0 lb GVWR, Air Ride Cab, 56 in High Rise Sleeper Cab, Bunk Beds, 295/75R22.5, Air Ride Suspension, 232 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks