InMotion WS710859 Engine Crankshaft Seal - Front

Overview

The InMotion WS710859 is a differential pinion seal built for a secure barrier against contaminants and fluid leaks. It uses fluoro-elastomer construction for durability and consistent sealing performance in demanding driving conditions.

Compatible with Subaru Legacy, Subaru Outback, Subaru Tribeca, and Subaru B9 Tribeca front applications, this seal is specified for vehicles that need a precise fit at the differential pinion. The WS710859 is a direct service part for maintaining seal integrity and protecting internal components.

Key Features

• Fluoro-elastomer material for resistance to heat and wear
• Precision dimensions for a controlled seal at the housing bore and shaft interface
• Helps block debris and moisture from entering the differential pinion area
• Supports leak control to maintain differential fluid retention
• Fits Subaru Legacy, Outback, Tribeca, and B9 Tribeca front applications

Detailed Description

The WS710859 is engineered as a differential pinion seal with a 1.516-inch inside diameter, 1.988-inch housing bore, and 0.295-inch thickness. Those dimensions help the seal seat correctly and maintain contact where the pinion shaft passes through the housing. InMotion part number WS710859 is a practical replacement for front differential service on Subaru Legacy and Subaru Outback models, as well as Subaru Tribeca and Subaru B9 Tribeca applications listed in the fitment data.

By maintaining a tight seal, this component helps reduce the chance of fluid loss and contamination that can affect differential operation. The fluoro-elastomer construction adds material stability for long-term sealing performance. If you are servicing a Subaru Legacy, Subaru Outback, or related Subaru front differential application, WS710859 provides the dimensional accuracy needed for a proper repair.

What It Is Used For

• Stopping differential fluid seepage at the pinion opening
• Keeping dirt and moisture out of the differential housing
• Replacing a worn or hardened pinion seal
• Restoring sealing performance after service work
• Addressing leaks that can lead to low fluid levels

Installation Notes and Tips

Confirm the housing bore, shaft diameter, and application before installation. Clean the sealing surface thoroughly and inspect the pinion area for wear or damage that could affect seal life. Proper seating is important for a reliable seal on Subaru Legacy, Subaru Outback, and other listed front applications.

Quality Assurance

InMotion manufactures this seal with precision-focused construction and durable materials to support dependable sealing performance. Part number WS710859 is built to meet the dimensional requirements shown in the product data for the listed Subaru applications.