Cummins M11 6 Cylinder Diesel Engine, International 9-Speed Transmission, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, 11R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 210 in Wheelbase, PTO, 4000 gal Steel Tank, PTO Driven Pump, 7 ft 6 in, Spray Bar, Rear Spray, Side Spray