Timken 4764 Automatic Transmission Extension Housing Seal

Automatic Transmission Extension Housing Seal

Timken 4764 is an automatic transmission extension housing seal built for direct replacement service on a wide range of Ford, Chevrolet, Pontiac, Lincoln, and Mercury applications. It is engineered to retain transmission fluid at the extension housing while helping block dirt and debris from entering the seal area.

Key Features

• Precision sealing design helps prevent lubricant escape and contamination entry
• Reinforced outer case helps resist installation damage and improve durability
• Ribbed rubber inner diameter seals minor spindle imperfections and supports positive seating
• Internal contamination exclusion system helps reduce debris penetration that can lead to leakage
• Vent holes promote lubricant flow around the seal lip to help manage heat build-up
• Compatible with applications such as 2004-2010 Ford F-150, 2009-2014 Ford E-150, and 2005-2009 Chevrolet Equinox

Detailed Description

Timken 4764 is an automatic transmission extension housing seal for vehicles that use a non-booted extension housing seal design. It is a practical replacement for service work on Ford F-150, Ford E-150, Ford E-250, Ford E-350 Super Duty, Ford Crown Victoria, Lincoln Town Car, Mercury Grand Marquis, Chevrolet Equinox, and Pontiac Torrent applications listed in the fitment data. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Transmission fluid leakage at the extension housing
• Contamination entering the seal area
• Seal wear caused by heat build-up
• Poor sealing from minor shaft or spindle surface imperfections
• Damage from installation on worn or exposed housing surfaces

Installation Notes and Tips

Verify the vehicle uses an automatic transmission extension housing seal without a boot before installation. Clean the sealing surface thoroughly, inspect the housing for wear or scoring, and confirm the replacement matches the original seal style for the specific Ford, Chevrolet, Pontiac, Lincoln, or Mercury application. Timken 4764 should be installed with care to avoid distorting the reinforced outer case.

Quality Assurance

Timken designs oil and grease seals with precision sealing features, contamination exclusion, and heat-management details to support reliable service in transmission applications.