Timken SL260134 Automatic Transmission Extension Housing Seal - Rear

Timken SL260134 Extension Housing Seal

The Timken SL260134 is an automatic transmission extension housing seal built for Ford Super Duty applications. It is engineered to retain transmission lubricant, block outside contamination, and support consistent sealing at the extension housing.

Key Features

• Precision sealing design helps reduce lubricant escape at the extension housing
• Reinforced outer case resists installation damage and adds durability
• Ribbed rubber inner diameter helps seal minor spindle imperfections and promotes seating
• Internal contamination exclusion system helps keep debris out of the seal area
• Vent holes promote lubricant flow around the seal lip to reduce heat build-up
• Fits 2011-2018 Ford F-250 Super Duty, N/A
• Fits 2011-2018 Ford F-350 Super Duty, N/A
• Fits 2016-2018 Ford E-350 Super Duty, N/A

Detailed Description

Timken SL260134 is an automatic transmission extension housing seal for Ford E-350 Super Duty, Ford F-250 Super Duty, and Ford F-350 Super Duty applications. It is designed to maintain a tight seal at the transmission extension housing, helping control fluid loss while limiting the entry of dirt and other contaminants. The reinforced case and ribbed sealing surface support a secure fit during installation and service. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Transmission fluid seepage at the extension housing
• Contamination entering the seal area
• Seal damage during installation
• Heat-related seal wear from poor lubricant circulation
• Sealing issues caused by minor spindle surface imperfections

Installation Notes and Tips

Verify the transmission application before installation and inspect the housing and shaft surface for wear, scoring, or debris. Clean the sealing area thoroughly and install the seal squarely to avoid distortion. For Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford E-350 Super Duty service work, confirm the extension housing dimensions match the original part number SL260134.

Quality Assurance

Timken oil and grease seals are built with precision sealing features and contamination control details intended to support reliable service life in drivetrain applications.