10131366 is a Dana cylinder spacer for off-highway axle applications. A spacer of this kind sets the position of the parts it sits between, so the correct part number matters on a repair. Match 10131366 against your axle before ordering, and call us if you need help confirming proper fit for your application. A genuine Dana part from Pro Gear and Transmission.FeaturesDana part number 10131366Cylinder spacerFor off-highway axle applicationsA genuine Dana part