InMotion WS4990 Wheel Seal - Front Inner

Wheel Seal for Front Inner Applications

The InMotion WS4990 wheel seal is built with nitrile material to help maintain a secure seal at the differential pinion area. With a 2.047 in inside diameter, 2.688 in outside diameter, and 0.276 in width, it is sized for precise sealing performance in select front inner applications.

Compatible With 2001-2005 Kia Rio, front inner; 1994-1997 Ford Aspire, front inner; 1991-1994 Mercury Capri, front inner; 1988-1993 Ford Festiva, front inner; 1986-1989 Mazda 323, front inner; and 1987-1989 Mercury Tracer, front inner.

Key Features

• Nitrile construction for sealing durability
• Inside diameter: 2.047 in
• Outside diameter: 2.688 in
• Width: 0.276 in
• Shaft diameter: 2.047 in
• Housing bore: 2.677 in
• Designed for front inner fitment on select vehicles
• InMotion part number WS4990

Detailed Description

InMotion WS4990 is a front inner wheel seal engineered to help keep contaminants out of the differential pinion area while maintaining a tight sealing surface. The nitrile material is selected for sealing performance in driveline environments where moisture, road debris, and lubricant retention matter. This seal is a direct-fit option for select Kia Rio, Ford Aspire, Mercury Capri, Ford Festiva, Mazda 323, and Mercury Tracer applications listed in the fitment data. If you are replacing a worn or leaking seal on a front inner driveline position, WS4990 provides the dimensional accuracy needed for proper housing and shaft engagement.

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

Common Issues This Seal Can Address

• Gear oil seepage at the differential pinion area
• Contamination from dirt, dust, and moisture entering the seal area
• Wear-related sealing loss on the front inner position
• Reduced lubricant retention in the driveline assembly
• Noisy or compromised operation caused by a deteriorated seal

Installation Notes and Tips

Confirm shaft diameter and housing bore measurements before installation to ensure proper seating. Inspect the mating surface for scoring, corrosion, or debris, and clean the area thoroughly before pressing the seal into place. Replace the seal if the original shows hardening, cracking, or visible leakage. Verify the front inner position and vehicle application against the fitment list for the correct match.

Quality Assurance

InMotion manufactures this seal with precision-focused dimensions and nitrile material selection to support reliable sealing performance in driveline service. Part number WS4990 is specified for the listed applications, including 2001-2005 Kia Rio, front inner, and other confirmed front inner fitments.