Detroit DD15 14.8 L Ultra Low Sulfur Diesel 455 hp Engine, 2013 US EPA Label, Requires Diesel Exhaust Fluid, 13311 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Detroit DT12DA1640 12-Speed Automated Transmission, 13300 lb Front Axle, 40000 lb Rears, Meritor MR20-005 Drive Axles, 2.50:1 Axle Ratio, 53300 lb GVWR, Air Ride Cab, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Airliner Air Ride Suspension, 166 in Wheelbase, Dual Fuel Tanks