Diesel Engine, Manual Transmission, 16000 lb Front Axle, 38000 lb Rears, 54000 lb GVWR, 11R24.5 Front Tires, 445/65R22.5 Rear Tires, Double Frame, Hendrickson Rubber over Walking Beam Suspension, 235 in Wheelbase, Steel Tank, Challenge Hydraulic Driven Pump, Water Cannon, Rear Spray