Cummins ISX15 6 Cylinder 15.0 L Diesel Engine, 2012 US EPA Label, Requires Diesel Exhaust Fluid, 18285 Engine hrs, Engine Brake, Allison 4500 Automatic Transmission, Differential Lock, 20000 lb Front Axle, 46000 lb Rears, Dana D46-170H Drive Axles, 4.78:1 Axle Ratio, 66000 lb GVWR, Air Ride Cab, 425/65R22.5 Front Tires, 11R22.5 Rear Tires, Hendrickson Haulmaax Rubber over Walking Beam Suspension, 240 in Wheelbase, PTO, ( 3 ) Oil Tanks, ( 6 ) Hose Reels, Grease Barrel ...