Cummins 6 Cylinder Diesel Engine, Air Conditioner, 9-Speed Manual Transmission, 18000 lb Front Axle, 20000 lb Rears, 58000 lb GVWR, 385/65R22.5 Front Tires, 11R22.5 Rear Tires, Dual Steering Boxes, Spring Suspension, 250 in Wheelbase, PTO, Double Frame, 20 ft 8 in x 92 in Bed, Fuel Tank