Detroit DD13 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 525 hp Engine, Requires Diesel Exhaust Fluid, 25432 Engine hrs, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 13220 lb Front Axle, 40000 lb Rears, Meritor RT-40.0-4 HT Drive Axles, 3.08:1 Axle Ratio, 53220 lb GVWR, Air Ride Cab, 70 in High Rise Sleeper Cab, Aluminum Outer Wheels, 11R22.5, Airliner Air Ride Suspension, 230 in Wheelbase, PTO, Wet Kit, Air Sliding 5th Wheel, Dual Fuel Tanks