The Rear Cover, also known as the Differential Cover, is a protective metal shield that encases the rear end of a truck's differential. The Rear Cover's primary purpose is to prevent debris and contaminants from entering the differential housing and causing damage to the gears and bearings inside. It also holds gear oil in place, ensuring proper lubrication of the differential components. The Rear Cover is typically made of durable materials such as steel or aluminum, and is bolted onto the rear end housing using gaskets for a secure seal. Proper maintenance of the Rear Cover can help extend the life of a truck's drivetrain components by preventing premature wear and tear caused by contamination or lack of lubrication.
| PN | NAME | QTY |
| 3933384(3921042) | Rear Cover | 1 |
| 3939353 | Rear Cover Gasket | 1 |
| 3912473 | O Ring Seal | 1 |