Detroit DD13 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 450 hp Engine, 2017 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, Meritor MT-40-14X Drive Axles, 3.25:1 Axle Ratio, 52000 lb GVWR, Air Ride Cab, Aluminum Wheels, 275/80R22.5 Front Tires, 445/50R22.5 Super Singles Rear Tires, Airliner 4-Bag Air Ride Suspension, 174 in Wheelbase, Dual Fuel Tanks