Cummins ISX15 6 Cylinder 15 L Diesel 485 hp Engine, 2013 US EPA Label, Requires Diesel Exhaust Fluid, 23540 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 13-Speed Manual Transmission, 13200 lb Front Axle, 38000 lb Rears, 51200 lb GVWR, Air Ride Cab, 68 in High Rise Sleeper Cab, Aluminum Wheels, 275/80R22.5, Air Ride Suspension, 242 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks