Detroit DD15 6 Cylinder Ultra Low Sulfur Diesel Engine, Requires Diesel Exhaust Fluid, 22529 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, Air Ride Cab, 48 in High Rise Sleeper Cab, Aluminum Front Wheels, 295/75R22.5, Airliner Air Ride Suspension, 212 in Wheelbase, PTO, Air Sliding 5th Wheel, Dual Fuel Tanks