Cat C12 6 Cylinder Diesel Engine, Engine Brake, Eaton Fuller RTLO-16918B 18-Speed Manual Transmission, Double Differential Locks, 14000 lb Front Axle, 46000 lb Rears, 4.30:1 Axle Ratio, 60000 lb GVWR, Air Ride Cab, Aluminum Wheels, 11R24.5, Airliner Air Ride Suspension, 200 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks