Detroit DD15 6 Cylinder 14.8 L Diesel Engine, 31878 Engine hrs, Engine Brake, Detroit DT12-DA-1750 12-Speed Automatic Transmission, 2.53:1 Axle Ratio, Air Ride Cab, 72 in High Rise Sleeper Cab, Bunk Beds, 11R22.5, Airliner Air Ride Suspension, 230 in Wheelbase, Dual Fuel Tanks