Timken SL260125 Manual Transmission Output Shaft Seal - Rear

Manual Transmission Output Shaft Seal

Timken SL260125 is a manual transmission output shaft seal built for leak control and contamination exclusion in select Ford, Chevrolet, GMC, and Lexus applications. It is a direct-fit sealing component for vehicles such as the Ford F-250 Super Duty, Chevrolet Silverado 2500 HD, and Lexus GS300 with A650E fitment.

Key Features

• Precision sealing design helps retain transmission lubricant and block outside contaminants.
• Reinforced outer case resists installation damage and adds durability.
• Ribbed rubber inner diameter helps seal minor spindle imperfections and supports positive 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 buildup.

Detailed Description

Timken SL260125 is engineered for manual transmission output shaft sealing where dependable lubricant retention matters. The seal’s reinforced construction and ribbed inner diameter help it seat securely on the shaft, while the contamination exclusion design helps reduce the risk of debris-related leakage. This makes it a practical replacement for vehicles including Lexus GS300, Lexus IS300, and Ford F-350 Super Duty applications listed in the fitment data. Timken SL260125 is also used in select Chevrolet Silverado 3500 and GMC Sierra 3500 rear applications.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems It Helps Address

• Transmission fluid leaking from the output shaft area.
• Contamination entering the seal and accelerating wear.
• Heat-related seal deterioration around the lip.
• Poor sealing on shafts with minor surface imperfections.
• Noise or drivability concerns caused by low lubricant level.

Installation Notes and Tips

Inspect the output shaft surface before installation and clean the sealing bore thoroughly. Confirm the transmission application and position before replacing the seal. Proper seating is important for leak prevention, especially on rear output shaft locations and A650E-equipped Lexus models.

Quality Assurance

Timken oil and grease seals use precision sealing designs and durability-focused construction to support reliable service in transmission applications.