The 5 Ton Rockwell Axle Pinion Seal (Part #500177) is engineered to keep gear oil inside your differential while sealing out the elements at the pinion input. Designed to OEM specifications, it fits the front and rear Rockwell 5 Ton axles found in M809, M939, and M54 military trucks.
Whether you’re servicing a stock military truck or upgrading your off-road build, this pinion seal is critical for preventing leaks at the yoke where the driveshaft connects to the differential. Built tough for high-torque conditions, it's ideal for mud trucks, rock crawlers, and axle swap projects.
If you're rebuilding or maintaining your 5 Ton Rockwell axle, don’t overlook the importance of a reliable pinion seal. Pair it with your inner and outer hub seals and tube seals for a complete rebuild or preventative maintenance.
