InMotion WS4160 Wheel Seal - Front Inner

Front Inner Differential Pinion Seal for Ford Trucks

The InMotion WS4160 is a front inner seal built to help keep differential pinion components protected from road debris, moisture, and fluid loss. It is a direct-fit sealing component for a wide range of Ford heavy-duty trucks and vans, including Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford E-Series applications.

• Front inner wheel seal / differential pinion seal application
• Helps maintain a tight seal at the differential pinion area
• Constructed from high-quality materials for sealing performance
• Supports protection against contaminants and moisture intrusion
• Fits multiple Ford truck and van platforms across 1980-2007 model years

Fitment Details

• Fits 1999-2007 Ford F-250 Super Duty, Front Inner
• Fits 1999-2007 Ford F-350 Super Duty, Front Inner
• Fits 2000-2005 Ford Excursion, Front Inner
• Fits 2001 Ford E-250 Econoline, Front Inner, To 11/30/2001
• Fits 2001 Ford E-350 Econoline Club Wagon, Front Inner, To 11/30/2001
• Fits 1982-2000 Ford E-250 Econoline, Front Inner
• Fits 1982-2000 Ford E-350 Econoline Club Wagon, Front Inner
• Fits 1999-2000 Ford E-350 Super Duty, Front Inner
• Fits 1998-1999 Ford F-250, Front Inner, with 8,800lb Gross Vehicle Weight (GVW)
• Fits 1982-1998 Ford E-350 Econoline, Front Inner
• Fits 1997 Ford F-250 HD, Front Inner, with 8,800lb Gross Vehicle Weight (GVW)
• Fits 1980-1997 Ford F-350, Front Inner
• Fits 1986-1996 Ford F-250, Front Inner
• Fits 1982-1991 Ford E-250 Econoline Club Wagon, Front Inner
• Fits 1980-1985 Ford F-250, Front Inner, with Heavy Duty Brakes
• Fits 1981 Ford E-250 Econoline, Front Inner, From 11/04/1980
• Fits 1981 Ford E-250 Econoline Club Wagon, Front Inner, From 11/04/1980
• Fits 1981 Ford E-350 Econoline, Front Inner, From 11/04/1980
• Fits 1981 Ford E-350 Econoline Club Wagon, Front Inner, From 11/04/1980

What This Seal Helps Address

• Differential pinion fluid seepage
• Contamination from dirt, dust, and road debris
• Moisture intrusion at the sealing surface
• Wear-related sealing loss on high-mileage Ford driveline components
• Service replacement needs during differential maintenance

Installation Notes

Confirm axle and application details before installation, especially on Ford E-Series and F-Series models with year-specific notes such as GVW, heavy-duty brakes, or build-date cutoffs. Inspect the pinion sealing surface, clean the housing area thoroughly, and verify proper seal seating during assembly. Part number WS4160 is commonly searched for Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford Excursion front inner seal service.

Quality Assurance

InMotion manufactures this seal with precision and high-quality materials to support reliable sealing at the differential pinion area. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.