InMotion WS9363S Wheel Seal - Rear

Rear Differential Pinion Seal for Classic Ford and Mercury

The InMotion WS9363S is a nitrile wheel seal engineered for rear differential pinion applications. It helps maintain a secure seal at the pinion area to keep contaminants out and fluid in, supporting dependable differential operation in classic Ford and Mercury rear axle setups.

• Nitrile construction for sealing performance and fluid resistance
• Inside diameter: 1.5 in.; shaft diameter: 1.5 in.
• Outside diameter: 2.264 in.; housing bore: 2.260 in.
• Width: 0.405 in. for a precise fit in the seal bore
• Fits rear applications with 31 splines
• Part number WS9363S for ordering and catalog matching

Fitment Details

• Fits 1969-1973 Ford Mustang, rear, with 31 splines
• Fits 1967-1973 Mercury Cougar, rear, with 31 splines
• Fits 1972 Ford Thunderbird, rear, with 31 splines
• Fits 1968-1972 Mercury Montego, rear, with 31 splines
• Fits 1966-1967 Mercury Capri, rear, with 31 splines
• Fits 1966-1967 Mercury Villager, rear, with 31 splines

Detailed Description

InMotion WS9363S is built for rear differential pinion sealing where dimensional accuracy matters. The nitrile material is selected for sealing durability, while the listed inside diameter, outside diameter, width, shaft diameter, and housing bore dimensions help support a proper fit in the differential assembly. For buyers searching for a rear differential pinion seal for 1969-1973 Ford Mustang or 1967-1973 Mercury Cougar applications, this part number provides a direct reference point for classic driveline service.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Gear oil seepage at the differential pinion area
• Contamination entering the pinion seal interface
• Wear-related sealing loss in the rear axle assembly
• Service replacement needs on classic Ford and Mercury rear differentials
• Fitment matching for 31-spline rear axle configurations

Installation Notes and Quality

Confirm the housing bore, shaft diameter, and spline configuration before installation. Clean the seal bore and mating surfaces thoroughly, and inspect the pinion area for wear or scoring that could affect sealing performance. WS9363S is specified for rear applications only and should be matched to the vehicle and axle configuration listed above.

InMotion focuses on precision-fit sealing components for driveline service, and WS9363S is specified with exact dimensional data to support accurate parts selection.