Cummins 6 Cylinder Ultra Low Sulfur Diesel Engine, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, 3.58:1 Axle Ratio, 52000 lb GVWR, Air Ride Cab, 70 in High Rise Sleeper Cab, Auxiliary Power Unit, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Airliner Air Ride Suspension, 242 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks