Timken 100552 Differential Pinion Seal - Front or Rear

Timken 100552 Differential Pinion Seal

Timken 100552 is a rear differential pinion seal built for precise lubricant control and dependable sealing performance. It is used on a wide range of Ford, Lincoln, Mazda, and Mercury rear applications, including Explorer, Taurus, and Edge models.

Key Features

• V-fluoro-elastomer sealing material for durability in driveline service
• Reinforced outer case helps resist installation damage
• Ribbed rubber inner diameter seals minor spindle imperfections and supports positive seating
• Internal contamination exclusion system helps block debris that can lead to leakage
• Vent holes promote lubricant flow around the seal lip to reduce heat build-up
• Dimensions: 2.872 in. outside diameter, 1.844 in. shaft diameter, 2.865 in. housing bore, 0.425 in. width
• CW helix type

Detailed Description

This differential pinion seal is engineered to retain gear oil at the pinion area while keeping contaminants out of the housing. Timken 100552 uses a reinforced outer case and a ribbed inner diameter to improve sealing contact and installation stability, while vent holes help manage heat around the seal lip during operation. It cross-references National 100552 and Davico Mfg 18442 for the same application.

Compatible With rear applications on 2011-2019 Ford Explorer, 2008-2019 Ford Taurus, 2015-2018 Ford Edge, 2017-2020 Lincoln Continental, 2009-2016 Lincoln MKS, 2009-2013 Ford Flex, 2007-2012 Ford Fusion, 2010-2012 Lincoln MKT, 2007-2012 Lincoln MKX, 2007-2012 Lincoln MKZ, 2009-2011 Mazda Tribute, 2001-2012 Ford Escape, 2005-2011 Mercury Mariner, 2007-2011 Mercury Milan, 2008-2009 Ford Taurus X, and 2008-2009 Mercury Sable. Fits 2001-2012 Ford Escape, rear, with Spicer 28 6.85 in. ring gear.

What It Is Used For

• Rear differential oil seepage at the pinion seal area
• Contamination entering the differential housing
• Heat-related seal wear around the pinion lip
• Seal leakage caused by minor shaft or spindle surface imperfections
• Loss of lubricant that can affect driveline operation

Installation Notes and Tips

Verify shaft diameter, housing bore, width, and helix direction before installation. Clean the sealing surface and inspect the pinion area for wear, scoring, or debris that could affect seal seating. For best results, install the seal squarely to avoid case distortion and confirm the rear differential application matches the vehicle and axle configuration.

Quality Assurance

Timken oil and grease seals are built with precision sealing designs focused on lubricant retention and contamination control. The reinforced case, contamination exclusion features, and heat-management venting reflect the brand’s driveline sealing engineering approach.