Mercedes-Benz 6 Cylinder Ultra Low Sulfur Diesel Engine, 25541.3 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Allison 6-Speed Automatic Transmission, 12000 lb Front Axle, 22700 lb Rears, 34700 lb GVWR, Air Ride Cab, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Airliner Air Ride Suspension, 149 in Wheelbase, Air Sliding 5th Wheel