Cummins ISX15 6 Cylinder 15 L Ultra Low Sulfur Diesel 500 hp Engine, 2012 US EPA Label, Requires Diesel Exhaust Fluid, 32093.8 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 13-Speed Manual Transmission, Differential Lock, 13200 lb Front Axle, 40000 lb Rears, 3.42:1 Axle Ratio, 53200 lb GVWR, Air Ride Cab, 62 in High Rise Sleeper Cab, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Paccar Air Ride Suspension, 235 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks