Timken 220918 Automatic Transmission Input Shaft Seal

Timken 220918 Transmission Input Shaft Seal

The Timken 220918 automatic transmission input shaft seal is built for precise sealing at the transmission input shaft to help retain lubricant and block contaminants. It is a direct-fit service part for select Honda and Acura applications, including Honda Accord, Honda CR-V, and Acura TSX models.

Key Features

• S-Nitrile construction for sealing performance in transmission environments
• Outside diameter: 0.717 in. / 18.20 mm
• Housing bore: 0.709 in. / 18.00 mm
• Shaft diameter: 0.354 in. / 9.00 mm
• Width: 0.276 in. / 7.00 mm
• Reinforced outer case helps resist installation damage
• Ribbed rubber inner diameter helps seal minor spindle imperfections and improve 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

Detailed Description

Timken 220918 is an automatic transmission input shaft seal designed around precise dimensions for a secure fit in the housing bore and on the shaft. The S-Nitrile sealing material is selected for transmission service, while the reinforced outer case adds durability during installation. The ribbed inner diameter helps the seal conform to minor shaft imperfections, and the contamination exclusion design supports cleaner operation at the sealing surface. This part cross-references National 220918 for the same application. It is a practical replacement choice for drivers searching for a Timken 220918 transmission input shaft seal for 1998-1999 Honda Accord, 2005-2006 Honda CR-V, or 2010-2014 Acura TSX service work.

Common Issues This Seal Can Address

• Transmission fluid seepage at the input shaft area
• Contaminant intrusion around the seal lip
• Heat-related seal wear from poor lubricant circulation
• Leakage caused by minor shaft surface imperfections
• Fitment problems from worn or damaged original seals

Installation Notes and Tips

Inspect the shaft and housing bore before installation and clean away old fluid, debris, and seal residue. Confirm the seal dimensions match the application before pressing it into place. Use care during installation to avoid distorting the outer case or damaging the sealing lip. For best results, verify the vehicle application by year and model before service.

Quality Assurance

Timken oil and grease seals are engineered with precision sealing designs to help prevent lubricant escape and reduce contaminant entry. The brand’s seal construction focuses on durability, proper seating, and controlled lubricant flow at the sealing surface.