InMotion WS8549S Wheel Seal - Rear Outer

InMotion WS8549S Differential Pinion Seal

The InMotion WS8549S is a nitrile differential pinion seal built to create a tight barrier at the pinion area and help keep contaminants out of the differential. It is a direct-fit sealing component for select Jeep CJ5, CJ7, Scrambler, and Grand Wagoneer rear outer applications with AMC 20 axle coverage where listed.

Key Features

• Nitrile construction for dependable sealing performance
• Inside diameter: 1.36 in.; shaft diameter: 1.36 in.
• Outside diameter: 2.328 in.; housing bore: 4.56 in.
• Width: 0.323 in. for a compact seal profile
• Helps reduce fluid leakage and contamination at the differential pinion area
• InMotion WS8549S fitment for select rear outer Jeep axle applications

Detailed Description

Built from nitrile, the InMotion WS8549S differential pinion seal is specified to provide a secure sealing surface where the pinion assembly meets the housing. Its measured dimensions—1.36-inch inside diameter, 2.328-inch outside diameter, 0.323-inch width, and 4.56-inch housing bore—support accurate replacement selection for the listed driveline applications. For Jeep owners maintaining older axle assemblies, this seal helps preserve lubricant retention and limit intrusion from dirt and moisture.

Compatible With select Jeep rear outer applications including 1976-1986 Jeep CJ7, 1976-1983 Jeep CJ5, 1981-1985 Jeep Scrambler, and 1984-1985 Jeep Grand Wagoneer with AMC 20 axle. The InMotion WS8549S is a practical replacement when servicing the differential pinion seal on these vehicles.

What It Helps Solve

• Differential fluid seepage at the pinion seal area
• Contamination from road debris, dust, and moisture
• Wear caused by degraded or hardened sealing material
• Service issues during rear axle maintenance on Jeep CJ and Scrambler models
• Seal replacement needs on AMC 20 axle-equipped Grand Wagoneer applications

Installation Notes and Tips

Verify axle configuration, seal dimensions, and position before installation. Clean the sealing surface thoroughly and inspect the pinion area for wear, scoring, or damage that could affect seal life. Proper alignment during installation is important to maintain a uniform seal at the housing bore and shaft diameter.

Quality Assurance

InMotion manufactures the WS8549S with precision-focused dimensions and nitrile material selection for consistent sealing performance in the listed applications. This part cross-references Monroe Shocks & Struts (e.g., 172286) for the same application.

• Fits 1976-1986 Jeep CJ7, Rear Outer
• Fits 1984-1985 Jeep Grand Wagoneer, Rear Outer, with AMC 20 Axle
• Fits 1981-1985 Jeep Scrambler, Rear Outer
• Fits 1976-1983 Jeep CJ5, Rear Outer