The rear wheel hub oil seal (Part No. 1610765) is designed for heavy-duty truck and bus rear axle systems. Constructed from high-quality rubber and a metal frame, it prevents grease leakage and blocks contaminants from entering the bearing area. It is built to withstand heavy loads, high temperatures, and prolonged operation; it is directly compatible with OEM Part No. 1610765 and offers cross-compatibility with multiple part numbers, including 1591903, 1591908, and 944666.