Mercedes-Benz 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 450 hp Engine, 1670 Engine hrs, Engine Brake, Eaton Fuller FRO-15210C 10-Speed Manual Transmission, Differential Lock, 12000 lb Front Axle, 40000 lb Rears, Meritor RT-40-145 Drive Axles, 3.90:1 Axle Ratio, Air Ride Cab, Aluminum Wheels, 11R24.5, Airliner Air Ride Suspension, 170 in Wheelbase, PTO, Wet Kit, Air Sliding 5th Wheel, Dual Fuel Tanks