InMotion WS710493 Drive Axle Shaft Seal - Front Outer

Front Outer Differential Pinion Seal

The InMotion WS710493 is a front outer drive axle shaft seal built for differential pinion sealing performance. Made from polyacrylate, it uses precise dimensions to create a secure barrier against contaminants and help control fluid leakage in the differential assembly.

• Polyacrylate construction for sealing durability
• Inside diameter: 2.874 in.
• Outside diameter: 4.47 in.
• Housing bore: 4.448 in.
• Thickness and width: 0.827 in.
• Fits front outer differential applications with Spicer 50 axle configurations

Fitment Details

Compatible With 2002 Ford Excursion, front outer OE design. Fits 1999-2002 Ford F-250 Super Duty, front outer with Spicer 50 axle. Fits 1999-2002 Ford F-350 Super Duty, front outer with Spicer 50 axle. Fits 2000-2001 Ford Excursion, front outer with Spicer 50 axle.

Use InMotion WS710493 when replacing a worn or leaking differential pinion seal on Ford Excursion, Ford F-250 Super Duty, or Ford F-350 Super Duty front outer axle assemblies. The seal is engineered to maintain a tight interface at the shaft and housing bore, helping keep debris and moisture out of the differential while retaining lubricant inside the assembly. This part number, WS710493, is specified for applications that require the listed dimensions and Spicer 50 axle fitment.

What It Helps Solve

• Gear oil seepage at the differential pinion area
• Contamination from road debris and moisture
• Seal wear from age, heat, and driveline use
• Loss of sealing integrity at the shaft or housing bore
• Service issues on front outer axle assemblies with Spicer 50 axle

Installation Notes

Verify shaft diameter, housing bore, and axle configuration before installation. Clean the sealing surface and inspect the pinion area for wear, scoring, or contamination that could affect seal life. Confirm the front outer position and OE design requirements on the vehicle before installing WS710493.

Quality Assurance

InMotion manufactures this seal with precision-focused dimensions and high-quality materials to support reliable differential sealing in demanding driving conditions, from off-road use to daily street driving.