Detroit DD15 14.8 L Ultra Low Sulfur Diesel 455 hp Engine, US EPA Label, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller FRO-16210C 10-Speed Manual Transmission, Differential Lock, 13220 lb Front Axle, 40000 lb Rears, Meritor MT-40-14X Drive Axles, 3.55:1 Axle Ratio, 53220 lb GVWR, Air Ride Cab, 72 in High Rise Sleeper Cab, 11R22.5 Front Tires, 295/75R22.5 Rear Tires, Airliner Air Ride Suspension, 228 in Wheelbase, PTO, Air Sliding 5th Wheel, Dual Fuel Tanks