Detroit DD15 6 Cylinder 14.8 L Diesel 455 hp Engine, 2019 US EPA Label, Requires Diesel Exhaust Fluid, Engine Brake, Allison 4500 Automatic Transmission, 22000 lb Front Axle, 48040 lb Rears, Meritor RT-58-185 Drive Axles, 6.14:1 Axle Ratio, 70040 lb GVWR, 425/65R22.5 Front Tires, 11R22.5 Rear Tires, Chalmers Rubber over Walking Beam Suspension, 250 in Wheelbase, 6000 gal Steel Tank, PTO Driven Pump, Hose Reel, Water Cannon, Front Spray, Rear Spray, Side Spray