Dana Spicer 10010013 pinion oil seal, listed for the Dana 44 AdvanTEK front in a light axle application. A pinion seal keeps gear oil from escaping where the pinion shaft passes through the differential housing, so the gears stay lubricated, and it helps keep outside dirt and moisture from getting in. A worn one shows itself as gear oil leaking at the pinion. This is a genuine Dana Spicer part from Pro Gear and Transmission. Call us to confirm proper fit for your application.FeaturesPinion oil seal, Dana Spicer part number 10010013Listed for the Dana 44 AdvanTEK frontLight axle applicationSeals the differential pinion shaft against gear oil leaksA genuine Dana Spicer part sold by Pro Gear and Transmission