SKF 25106 Differential Pinion Seal - Rear

SKF 25106 Differential Pinion Seal

SKF 25106 is a differential pinion seal built for driveline sealing at the pinion shaft. Its dual-lip construction adds a primary sealing lip and a radial lip to help block dirt and water intrusion, while the Bore-Tite outer coating helps reduce oil seepage from minor housing bore imperfections.

Key Features

• Dual-lip seal design for added protection at the pinion area
• LongLife sealing surface type for consistent sealing performance
• 2.500 shaft diameter for the specified pinion shaft application
• 3.881 outside diameter for proper housing fitment
• 0.607 width for the listed differential seal dimensions
• SKF Bore-Tite coating on the outer diameter helps control leaks from small bore scratches

Detailed Description

This SKF differential pinion seal is engineered for driveline and axle service where pinion oil retention matters. The 25106 seal uses a dual-lip layout to create a stronger barrier against contamination and fluid loss, making it a practical choice for differential repair work on vehicles such as Ford F-150 and Chevrolet Silverado applications when the correct seal dimensions match the axle housing. The SKF 25106 part number is also referenced in interchange listings for related service applications.

SKF has a long history in seal design and manufacturing, and this seal reflects that focus with a construction aimed at stable fit, controlled sealing contact, and resistance to minor housing imperfections. For technicians servicing differential pinion leaks, SKF 25106 provides a dimension-specific replacement option rather than a universal seal.

What It Helps Fix

• Differential oil leaking from the pinion seal area
• Contamination entering the pinion opening from dirt or water
• Seepage caused by minor scratches in the housing bore
• Seal wear that leads to fluid loss around the pinion shaft
• Service issues on Ford F-150 and Chevrolet Silverado driveline repairs

Installation Notes and Tips

Verify shaft diameter, outside diameter, and width before installation. Inspect the housing bore and pinion surface for wear, corrosion, or scoring, and clean the sealing area thoroughly before pressing in the seal. Proper alignment during installation helps the dual-lip design seat evenly and maintain sealing contact.

Quality Assurance

SKF manufactures seals to high quality standards with an emphasis on long service life and safety. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.