Detroit DD15 14.8 L Ultra Low Sulfur Diesel 455 hp Engine, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller FRO-16210C 10-Speed Manual Transmission, Differential Lock, 13200 lb Front Axle, 40000 lb Rears, Meritor RT-40-160 Drive Axles, 3.91:1 Axle Ratio, 53200 lb GVWR, Air Ride Cab, 60 in High Rise Sleeper Cab, Thermo King 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