InMotion WS1994 Wheel Seal - Rear Outer

Wheel Seal for Differential Pinion Applications

The InMotion WS1994 wheel seal is built with nitrile material to help maintain a secure seal at the differential pinion area. It helps block moisture and road debris while supporting leak control in demanding driving conditions.

Key Features

• Nitrile construction for sealing performance and durability
• Inside diameter: 1.89 in.; shaft diameter: 1.89 in.
• Outside diameter: 2.767 in.; housing bore: 2.756 in.
• Width: 0.394 in. for a compact seal profile
• Direct-fit style for rear outer applications listed below
• Part number WS1994 for catalog and service reference

Detailed Description

InMotion WS1994 is a precision-engineered wheel seal intended for rear outer applications on select Mazda, Isuzu, and Ford vehicles. The nitrile sealing element is specified to create a tight barrier at the differential pinion area, helping reduce contamination from dirt and moisture while supporting leak resistance. This makes the WS1994 a practical service part for vehicles that see daily commuting, work use, or off-road exposure. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. Compatible with 1987-1993 Mazda B2200 rear outer, 1987-1993 Mazda B2600 rear outer, 1981-1987 Isuzu Pickup rear outer, 1987 Isuzu Trooper rear outer to 06/30/1987, 1986-1987 Mazda B2000 rear outer, 1979-1984 Mazda B2000 rear outer, 1984-1986 Isuzu Trooper rear outer, and 1972-1982 Ford Courier rear outer. The WS1994 is also a fitment match for rear outer service on Mazda B2200, Mazda B2600, and Isuzu Pickup applications where the listed dimensions align.

What It Helps Address

• Gear oil seepage at the differential pinion seal area
• Contamination from dust, water, and road debris
• Seal wear that can affect rear axle service life
• Maintenance needs on older Mazda, Isuzu, and Ford driveline assemblies
• Noise or driveline concerns related to compromised sealing surfaces

Installation Notes and Tips

Verify the inside diameter, outside diameter, width, shaft diameter, and housing bore before installation. Inspect the sealing surface for scoring, corrosion, or debris, and clean the bore thoroughly so the nitrile seal seats evenly. Confirm the vehicle position as rear outer and match the application notes, including the 1987 Isuzu Trooper cutoff date of 06/30/1987. Use proper seal installation practices to avoid distortion during service.

Quality Assurance

InMotion manufactures this seal with dimensional specifications intended to support consistent fitment and sealing performance in the listed applications. Part number WS1994 is identified for service lookup and replacement matching across the supported vehicle range.