Detroit DD15 6 Cylinder 14.8 L Diesel 475 hp Engine, Requires Diesel Exhaust Fluid, 20091 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller FO-16E313A-MHP ULT Automatic Transmission, Differential Lock, 13300 lb Front Axle, 40000 lb Rears, Detroit DA-RT-40.0-4 Drive Axles, 3.31:1 Axle Ratio, 53220 lb GVWR, Air Ride Cab, High Rise Sleeper Cab, Bunk Beds, Thermo King TriPac Auxiliary Power Unit, Aluminum Wheels, 11R22.5 Front Tires, 11R22.5 Rear Tires, Airliner Air Ride Suspension, 228 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks