Eaton 119427 oil seal is a differential seal that keeps gear oil inside the housing and keeps water, dirt and road grime out. Seals of this kind wrap a fast-turning shaft, and the oil they hold in is what protects the gears from friction and heat. When one has given up, it usually shows as gear oil weeping or dripping around the shaft exit and onto nearby parts. It is a genuine Eaton part from Pro Gear and Transmission. Call us to confirm proper fit for your axle.Interchanges:1277219773Eaton 119425Eaton 119457Mack 2719-119457Navistar 596309C91Navistar 395125C91Eaton 79470Mack 2719-79470Dana 47851GMC 15510919GMC 9036866FeaturesEaton oil seal, part number 119427Keeps gear oil in and road contaminants out of the differentialOil weeping around the shaft exit is the usual sign a seal is finishedGenuine Eaton differential part