Cummins ISX 14.9 L Ultra Low Sulfur Diesel Engine, 2007 US EPA Label, Air Conditioner, Cruise Control, Power Windows, Digital Mirrors, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, Differential Lock, 12000 lb Front Axle, 20000 lb Rears, 52000.0 lb GVWR, Air Ride Cab, 51 in High Rise Sleeper Cab, Auxiliary Power Unit, Aluminum Outer Wheels, 295/75R22.5, International Air Ride Suspension, 206 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks