Cummins 6 Cylinder Diesel Engine, 21733 Engine hrs, Allison Automatic Transmission, 13200 lb Front Axle, 40000 lb Rears, 53200 lb GVWR, 12R22.5 Front Tires, 11R22.5 Rear Tires, Double Frame, Airliner Air Ride Suspension, 230 in Wheelbase, Hour Meter Reads 21733