Detroit DD13 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 500 hp Engine, 2013 US EPA Label, Requires Diesel Exhaust Fluid, 28122 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12350 lb Front Axle, 40000 lb Rears, Detroit DA-RT-40.0-4 Drive Axles, 3.58:1 Axle Ratio, 52350 lb GVWR, Air Ride Cab, 58 in High Rise Sleeper Cab, Aluminum Wheels, 275/80R24.5 Front Tires, 285/75R24.5 Rear Tires, Airliner Air Ride Suspension, 233 in Wheelbase, PTO, Wet Kit, Air Sliding 5th Wheel, Dual Fuel Tanks