Detroit 6 Cylinder Diesel Engine, Requires Diesel Exhaust Fluid, 15345.33 Engine hrs, Eaton Fuller 13-Speed Manual Transmission, Double Differential Locks, 12500 lb Front Axle, 40000 lb Rears, 52500.0 lb GVWR, Air Ride Cab, 70 in High Rise Sleeper Cab, Bunk Beds, Aluminum Wheels, 295/75R22.5 Front Tires, 275/80R22.5 Rear Tires, Airliner Air Ride Suspension, 246 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks