Cummins X15 525hp 6-Cyl Diesel, Automatic, PTO, Double Frame, Aluminum Headache Rack, Air Slide 5th Wheel, Air Ride, Lowboy Ramps, Aluminum Wheels, 315/80R 22.5 Front Tires, DEF System, 20,000# Front Axle, 66,000# GVWR, S/N: 1XKDD40X9JR208826