Cat C15 6 Cylinder Diesel Engine, Positive Air Shutoff, Engine Brake, Eaton Fuller RTLO-18918B 18-Speed Manual Transmission, Triple Differential Locks, 14000 lb Front Axle, 60900 lb Rears, Meritor RZ-166 Drive Axles, 4.56:1 Axle Ratio, 74900 lb GVWR, Air Ride Cab, 40 in Mid Roof Sleeper Cab, Aluminum Wheels, 385/65R22.5 Front Tires, 11R24.5 Rear Tires, Airliner Air Ride Suspension, 268 in Wheelbase, 20 ft x 96 in Bed, Pintle Hitch, Hour Meter Reads 33187