Cummins B5.9 6 Cylinder 5.9 L Diesel 175 hp Engine, Manual Transmission, 10000 lb Front Axle, 21000 lb Rears, 31000 lb GVWR, 12R22.5 Front Tires, 11R22.5 Rear Tires, Spring Suspension, 154 in Wheelbase, PTO, Davis 10 ft Long x 3 ft 9 in High Steel Body, Flat Bed