Detroit DD13 12.8 L Ultra Low Sulfur Diesel 500 hp Engine, 2012 US EPA Label, Requires Diesel Exhaust Fluid, 16126.9 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller Automated Transmission, Differential Lock, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, Air Ride Cab, Aluminum Front Wheels, 11R22.5 Front Tires, 11R22.5 Rear Tires, Airliner Air Ride Suspension, 172 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks