InMotion WS370003A Wheel Seal - Rear Inner

Wheel Seal for Differential Pinion Service

The InMotion WS370003A wheel seal is built with nitrile material to help maintain a secure seal at the differential pinion area. It is engineered to keep moisture and road debris out while helping retain lubricant inside the assembly for consistent driveline protection.

For technicians and owners servicing driveline and axle sealing systems, this seal supports reliable differential pinion sealing on applications that require a 4.765 shaft diameter, 6.311 housing bore, 6.325 outside diameter, and 1.078 width. It is a practical choice for maintaining sealing integrity on vehicles such as Honda Civic and Toyota Corolla applications where precise fitment matters.

Key Features

• Brand: InMotion
• Part number: WS370003A
• Material: Nitrile
• Width: 1.078 in.
• Outside diameter: 6.325 in.
• Shaft diameter: 4.765 in.
• Housing bore: 6.311 in.
• Built for differential pinion sealing in driveline and axle service

Detailed Description

WS370003A is a precision-formed seal intended for differential pinion applications where accurate dimensions are critical. The nitrile construction provides dependable resistance to common contaminants and helps preserve the lubricant barrier inside the differential. If you are replacing a worn pinion seal during axle service, this part number WS370003A offers the dimensional consistency needed for a proper service repair on select Honda Civic and Toyota Corolla driveline applications.

Common Problems This Seal Can Address

• Gear oil seepage at the differential pinion area
• Contamination from water, dirt, and road debris
• Seal wear caused by age, heat, and mileage
• Loss of lubricant that can affect differential operation
• Noise or driveline concerns related to low fluid level

Installation Notes and Tips

Verify shaft diameter, housing bore, outside diameter, and width before installation. Inspect the pinion surface for scoring or wear, and clean the sealing area thoroughly before pressing the seal into place. Confirm the seal is seated squarely to avoid premature leakage. Use the vehicle service procedure for torque and setup specifications during differential work.

Quality Assurance

InMotion manufactures this seal with precision-focused dimensions and nitrile material selection for dependable sealing performance in driveline service. Part number WS370003A is built to support accurate replacement work where a secure differential pinion seal is required.