SKF 18100 Differential Pinion Seal - Rear

SKF Differential Pinion Seal 18100

SKF 18100 is a differential pinion seal built for rear axle service where gear oil retention and contamination control matter. It uses a nitrile sealing surface and precise dimensions to support a proper seal at the pinion shaft in a wide range of Ford and Mercury rear differentials.

• Nitrile sealing surface for dependable oil sealing performance
• Outside diameter: 2.627 in.
• Shaft diameter: 1.813 in.
• Width: 0.500 in.
• Designed for rear differential pinion applications
• Cross-references Wix 46375 for the same application

Application Coverage

Compatible with rear axle applications on classic Ford Mustang, Ford Pinto, Mercury Cougar, and Mercury Bobcat models, including 6.75-inch, 7.25-inch, 7.50-inch, 7.75-inch, 8.00-inch, and 8.50-inch ring gear configurations listed in the fitment data. Fits 1984 Ford Bronco II, rear; fits 1983-1984 Ford Ranger, rear; and fits 1965-1973 Ford Mustang, rear, including 7.25-inch and 8.00-inch ring gear applications. SKF 18100 also covers select Mercury rear differential applications such as Cougar, Capri, Zephyr, Montego, Monarch, Bobcat, and Villager.

SKF has a long history in seal engineering, including early shaft-seal development and continued refinement of materials and bonding methods. That experience is reflected in the 18100 differential pinion seal, which is manufactured to specific design requirements for the operating environment of driveline and axle service.

What It Helps Address

• Gear oil seepage at the differential pinion area
• Contamination entering the rear axle housing
• Seal wear from age, heat, and driveline use
• Maintenance on Ford and Mercury rear differential assemblies
• Restoration of proper sealing on classic rear axle setups

Installation Notes

Verify the shaft diameter, outside diameter, and width against the original seal before installation. Inspect the pinion yoke and sealing surface for grooves or wear, and replace damaged components as needed to help the new seal seat correctly. Clean the housing bore and sealing area thoroughly before assembly.

Quality Assurance

SKF manufactures seals to defined specifications using premium materials selected for the application and operating environment. Part number 18100 is produced to support long service life and consistent sealing performance in driveline use.