Detroit Series 50 6 Cylinder 8.5 L Ultra Low Sulfur Diesel 320 hp Engine, 2000 US EPA Label, 28284 Engine hrs, Meritor MO-11G10C-M11 10-Speed Manual Transmission, Differential Lock, 13200 lb Front Axle, 40000 lb Rears, Meritor RT-40-145 Drive Axles, 4.33:1 Axle Ratio, 53200 lb GVWR, Air Ride Cab, 315/80R22.5 Front Tires, 11R22.5 Rear Tires, Double Frame, Airliner Air Ride Suspension, 224 in Wheelbase, Dual PTO, 160 in Cab to Axle, 290 in Cab to End of Frame