InMotion WS710558 Differential Pinion Seal - Front Outer

Overview

InMotion WS710558 is a differential pinion seal built for axle applications that require a precise sealing surface and dependable contamination control. It uses PTFE material to help maintain a tight barrier against moisture and debris in the differential assembly.

Compatible With Ram and Dodge Ram truck applications listed below, this seal is specified for front outer use with AAM axle setups. The WS710558 part number is a direct reference for buyers matching the correct differential pinion seal by fitment and dimensions.

Key Features

• PTFE construction for low-friction sealing performance.
• Inside diameter of 2.125 and housing bore of 2.914 for dimensional matching.
• Outside diameter of 2.92 and thickness of 0.469 for proper seal placement.
• Designed to help keep contaminants out of the differential pinion area.
• Fits front outer AAM axle applications on select Ram and Dodge Ram trucks.

Detailed Description

The InMotion WS710558 differential pinion seal is engineered to create a secure seal at the pinion area, helping reduce fluid leakage while protecting internal differential components from dirt and moisture. Its PTFE material supports consistent sealing performance in demanding driveline conditions. This part number, WS710558, is listed for 2003-2010 Dodge Ram 2500 and Ram 3500 front outer applications with AAM axle, plus 2006-2008 Dodge Ram 1500 front outer with AAM axle and 2011-2018 Ram 2500 and Ram 3500 front outer with AAM axle.

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 entering the differential housing.
• Wear caused by compromised sealing surfaces.
• Loss of sealing integrity in AAM axle assemblies.
• Service needs tied to pinion seal replacement on Ram and Dodge Ram trucks.

Installation Notes and Tips

Verify axle configuration, seal dimensions, and application notes before installation. This seal is listed for front outer positions with AAM axle fitments only, so confirm the vehicle matches the cataloged year, make, model, and notes before ordering. Clean the sealing surface thoroughly and inspect the pinion area for wear or damage that could affect seal performance.

Quality Assurance

InMotion positions this seal as a precision-made replacement using high-quality materials for reliable differential sealing. The WS710558 part number should be matched against the vehicle application and dimensions to confirm correct fitment.