Timken 4189H Automatic Transmission Torque Converter Seal

Timken 4189H Transmission Seal

The Timken 4189H automatic transmission torque converter seal is built for direct-fit service on a wide range of Ford, Mercury, and Lincoln applications. It helps retain transmission fluid at the torque converter area while keeping dirt and debris out of the sealing surface.

Compatible with Ford Taurus, Mercury Sable, Ford Windstar, Lincoln Continental, and Ford Probe applications, this seal supports reliable transmission sealing for vehicles that need a precise replacement part.

Key Features

• Precision sealing design for automatic transmission torque converter 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 entry
• Vent holes promote lubricant flow around the seal lip to reduce heat build-up
• Timken part number 4189H for catalog and interchange reference

Detailed Description

Timken 4189H is an automatic transmission torque converter seal engineered to maintain fluid control at the transmission interface. Its reinforced construction and ribbed inner diameter help the seal seat properly on the shaft surface, while the contamination exclusion design helps keep abrasive material away from the sealing lip. This makes it a practical replacement for Ford Taurus and Mercury Sable models, along with select Ford Windstar, Lincoln Continental, and Ford Probe applications. This part cross-references National 4189H for the same application.

Common Problems It Helps Address

• Transmission fluid leakage at the torque converter seal area
• Contamination entering the sealing surface
• Seal damage during installation
• Poor sealing on shafts with minor surface imperfections
• Heat-related seal wear from restricted lubricant flow

Installation Notes and Tips

Inspect the shaft and seal bore before installation and clean away old fluid, debris, and corrosion. Confirm the seal is fully seated and aligned squarely to avoid distortion during assembly. For best results, replace a worn seal when servicing the transmission or torque converter area on compatible Ford, Mercury, and Lincoln vehicles.

Quality Assurance

Timken oil and grease seals are built with precision sealing features, reinforced construction, and contamination control details to support dependable service in transmission applications.