InMotion WS3794 Wheel Seal - Front Inner or Rear Outer

Wheel Seal for Differential Pinion Service

The InMotion WS3794 wheel seal is built with nitrile material to help maintain a secure barrier against contaminants at the differential pinion area. It is specified for front inner Mercedes-Benz applications and rear outer Ford/Mercury applications, giving technicians a direct-fit sealing option for select driveline repairs.

Key Features

• Nitrile construction for sealing performance in driveline environments
• Inside diameter: 2.01 in.; shaft diameter: 2.01 in.
• Outside diameter: 2.655 in.; housing bore: 2.65 in.
• Width: 0.363 in. for a precise seal profile
• Direct fit for select Mercedes-Benz 300SE, 300SEL, 350SD, 350SDL, 420SEL, 560SEC, 560SEL, 300SDL, 300SD, 500SEC, and 500SEL applications
• Also used on select Lincoln Versailles and Mercury Grand Marquis, Marquis, Monarch, and Colony Park rear axle applications
• Part number WS3794 for catalog and service identification

Detailed Description

InMotion WS3794 is a precision wheel seal engineered to help protect sensitive internal differential components from moisture and debris. The nitrile sealing material supports reliable contact at the shaft and housing surfaces, helping reduce fluid leakage and preserve differential service life. This seal is listed for Fits 1988-1991 Mercedes-Benz 300SE, front inner; Fits 1988-1991 Mercedes-Benz 300SEL, front inner; Fits 1991 Mercedes-Benz 350SD, front inner; Fits 1990-1991 Mercedes-Benz 350SDL, front inner; Fits 1986-1991 Mercedes-Benz 420SEL, front inner; Fits 1986-1991 Mercedes-Benz 560SEC, front inner; Fits 1986-1991 Mercedes-Benz 560SEL, front inner; Fits 1986-1987 Mercedes-Benz 300SDL, front inner; Fits 1985 Mercedes-Benz 300SD, front inner; Fits 1985 Mercedes-Benz 500SEC, front inner; Fits 1985 Mercedes-Benz 500SEL, front inner; Fits 1977-1980 Lincoln Versailles, rear outer; Fits 1975-1978 Mercury Grand Marquis, rear outer with 9in Ring Gear; Fits 1973-1978 Mercury Marquis, rear outer with 9in Ring Gear; Fits 1975-1978 Mercury Monarch, rear outer with 9in Ring Gear; Fits 1973-1974 Mercury Colony Park, rear outer with 9in Ring Gear. 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 seal area
• Contamination from road debris and moisture entering the housing
• Wear-related sealing loss on select Mercedes-Benz and Ford/Mercury driveline setups
• Service issues tied to incorrect seal dimensions
• Noise or driveline concerns caused by compromised differential lubrication

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation. Clean the sealing surface and inspect the pinion area for scoring or wear that could affect seal life. Confirm vehicle position and axle configuration, especially on Mercury models with a 9-inch ring gear and Mercedes-Benz front inner applications. Use the WS3794 part number during parts lookup to confirm the correct seal before assembly.

Quality Assurance

InMotion manufactures this seal with precision-focused dimensions and nitrile material selection to support dependable differential sealing in service applications.