Cummins ISX 6 Cylinder 15.0 L Diesel 475 hp Engine, 2005 US EPA Label, Air Conditioner, Power Windows, Engine Brake, Eaton Fuller RTLO-16913A 13-Speed Manual Transmission, 12350 lb Front Axle, 38000 lb Rears, 50350 lb GVWR, Air Ride Cab, Mid Roof Sleeper Cab, Bunk Beds, Aluminum Wheels, 295/75R22.5, Air Assist Front Suspension, Air Ride Suspension, 265 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks