Detroit DD16 6 Cylinder 15.6 L Ultra Low Sulfur Diesel 600 hp Engine, 2017 US EPA Label, Requires Diesel Exhaust Fluid, 14.7 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 18-Speed Manual Transmission, Double Differential Locks, 14600 lb Front Axle, 46000 lb Rears, 4.10:1 Axle Ratio, 60600 lb GVWR, Air Ride Cab, 40 in Mid Roof Sleeper Cab, Aluminum Wheels, 385/65R22.5 Front Tires, 12R24.5 Rear Tires, Hendrickson Spring Suspension, 234 in Wheelbase, Dual Fuel Tanks