Mercedes-Benz 6 Cylinder Diesel Engine, Allison 2500 Automatic Transmission, 10000 lb Front Axle, 21000 lb Rears, Meritor RS-21-145 Drive Axles, 5.57:1 Axle Ratio, 11R22.5, Airliner Air Ride Suspension, 242 in Wheelbase, 18 ft 7 in x 96 in Bed, Hour Meter Reads CNV