InMotion WS711039 Engine Crankshaft Seal - Rear

Engine Crankshaft Seal Overview

InMotion WS711039 is a rear differential pinion seal built to keep contaminants out and fluid in. It uses fluoro-elastomer construction for dependable sealing performance in demanding driving conditions.

Key Features

• Fluoro-elastomer material for resistance to heat and fluid exposure.
• Precision dimensions for a secure fit at the housing bore and shaft interface.
• Helps reduce leakage and protect internal differential components.
• Engineered for rear differential pinion sealing applications.

Detailed Description

This InMotion seal is built around accurate sizing and durable sealing material to maintain a tight barrier where the differential pinion shaft passes through the housing. The fluoro-elastomer construction supports long-term sealing performance, while the specified inside diameter, outside diameter, thickness, shaft diameter, and housing bore help ensure proper dimensional match. WS711039 is a practical replacement choice for drivers servicing rear differential sealing on Subaru Legacy, Subaru Outback, Subaru WRX, Subaru Crosstrek, Subaru Forester, Subaru Impreza, Toyota 86, and Scion FR-S applications. This part number, WS711039, is also a useful reference when confirming the correct seal for the job.

What It Helps Address

• Differential fluid seepage at the pinion shaft area.
• Contamination entering the differential housing.
• Wear caused by compromised sealing surfaces.
• Loss of sealing integrity from aged or damaged seals.

Installation Notes and Tips

Confirm rear differential fitment by year, make, model, and application before installation. Inspect the sealing surface and housing bore for wear, scoring, or debris before pressing in the new seal. Proper alignment during installation helps the seal seat evenly and maintain contact pressure.

Quality Assurance

InMotion focuses on precision manufacturing and durable sealing materials for drivetrain service parts. WS711039 is built to provide a secure barrier against contaminants and fluid loss in rear differential applications.