InMotion WS3896 Differential Pinion Seal - Rear Outer

Differential Pinion Seal for Rear Outer Applications

The InMotion WS3896 differential pinion seal is built to help maintain a clean, secure seal at the rear outer pinion area. Made from nitrile, it is sized for a 1.94 inside diameter, 2.914 outside diameter, and 0.52 thickness to match the specified housing bore and shaft dimensions.

Use this seal when servicing the differential on select Chevrolet, GMC, and Cadillac trucks, vans, and chassis applications. The WS3896 is a direct-fit style differential pinion seal for vehicles with the listed rear outer fitments, including 1997 Chevrolet C1500 and 1997 GMC K2500, as well as many 1981-1996 models with a 9.5-inch ring gear.

Key Features

• Nitrile construction for sealing performance in driveline service
• 1.94 in. inside diameter and shaft diameter
• 2.914 in. outside diameter for the specified housing bore
• 0.52 in. thickness for proper seal depth
• Designed for rear outer differential pinion seal applications
• InMotion WS3896 part number for accurate ordering and lookup

Detailed Product Description

InMotion WS3896 is a differential pinion seal engineered to create a tight barrier against contaminants and fluid loss at the differential pinion area. Its nitrile material is selected for sealing durability, while the listed dimensions help ensure proper fit in the housing bore and around the shaft. This makes it a practical replacement for rear outer differential service on a wide range of Chevrolet C1500, GMC K2500, and related GM truck and van platforms.

For shoppers searching for a rear outer differential pinion seal for 1997 Chevrolet C1500, 1997 GMC Savana 2500, or 1988-1996 Chevrolet K1500 with a 9.5-inch ring gear, WS3896 provides the fitment-specific details needed for confident selection. This part cross-references no listed alternate part numbers in the provided data.

What It Helps Address

• Differential fluid seepage at the pinion seal area
• Contamination from dirt, debris, and moisture entering the housing
• Wear-related sealing loss during driveline maintenance
• Service needs on rear outer pinion seal applications
• Fitment matching for GM trucks, vans, and chassis models

Installation Notes and Tips

Confirm the housing bore, shaft diameter, and outside diameter before installation. This seal is listed for rear outer positions only, and many applications specify a 9.5-inch ring gear or a 2.91-inch outside diameter note. Clean the sealing surface thoroughly and inspect the pinion area for wear before installing the new seal.

Compatible With select 1981-1997 Chevrolet and GMC rear outer differential applications, including C1500, K2500, Express 2500, Savana 2500, G30, and related Cadillac Fleetwood and Brougham models where listed.

Quality Assurance

InMotion manufactures this seal with precision-focused materials and dimensions to support reliable differential sealing in the specified applications. The product information provided does not include a warranty statement.