Cummins N14 6 Cylinder Diesel Engine, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 18-Speed Manual Transmission, Double Differential Locks, 12000 lb Front Axle, 40000 lb Rears, 3.90:1 Axle Ratio, 52000 lb GVWR, 54 in High Rise Sleeper Cab, Bunk Heater, Aluminum Wheels, 11R24.5 Front Tires, 11R24.5 Rear Tires, Air Assist Front Suspension, Hendrickson, 244 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks