Mercedes Benz 6 Cylinder 781 cid Diesel 450 hp Engine, 2006 US EPA Label, Air Conditioner, Cruise Control, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, Air Ride Cab, Aluminum Outer Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Airliner Air Ride Suspension, 165 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks