013.01.4309 or 013014309 Dana Spicer shim, an axle housing shim for off highway axle application and a genuine Dana Spicer part from Pro Gear and Transmission. A shim is a thin spacer that sets exact spacing and alignment between mating parts, which keeps the assembly within its tolerances. Call us to confirm proper fit for your application, or if you are tracking down the right shim for an axle you are setting up.FeaturesDana Spicer axle housing shimFor off highway axle applicationSets spacing and alignment between mating parts