Detroit DD13 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 525 hp Engine, 2018 US EPA Label, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller FAO-16810C Automated Transmission, 12500 lb Front Axle, 40000 lb Rears, Meritor MP-40-14X4 Drive Axles, 3.42:1 Axle Ratio, 52500 lb GVWR, Air Ride Cab, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Airliner 4-Bag Air Ride Suspension, 182 in Wheelbase, Air Sliding 5th Wheel