Cat C7 6 Cylinder Diesel Engine, 21523 Engine hrs, Allison Automatic Transmission, Differential Lock, 16000 lb Front Axle, 40000 lb Rears, Air Ride Cab, Aluminum Wheels, 385/65R22.5 Front Tires, 11R22.5 Rear Tires, Spring over Walking Beam Suspension, 194 in Wheelbase, PTO, 15 ft Long x 3 ft 6 in High Steel Body, Flat Bed, Manual Roll Tarp