Cummins ISX 6 Cylinder 15.0 L Diesel 500 hp Engine, 2008 US EPA Label, Positive Air Shutoff, Engine Brake, Eaton Fuller 18-Speed Manual Transmission, Differential Lock, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, Air Ride Cab, Aluminum Front Wheels, 11R22.5, Air Ride Suspension, 185 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks, Hour Meter Reads 18421