Cummins ISX 6 Cylinder 15.0 L Diesel 450 hp Engine, 2009 US EPA Label, Engine Brake, Eaton Fuller 18-Speed Manual Transmission, Double Differential Locks, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, Air Ride Cab, Aluminum Wheels, 11R22.5, Air Ride Suspension, 175 in Wheelbase, Air Sliding 5th Wheel, Headache Rack, Dual Fuel Tanks, Hour Meter Reads 15140