Timken 223555 Manual Transmission Input Shaft Seal - Front

Timken 223555 Manual Transmission Input Shaft Seal

The Timken 223555 manual transmission input shaft seal is built for front-position applications on select BMW models, including BMW 325i, 330i, X3, X5, and Z4 coverage. It is designed to retain transmission lubricant at the input shaft while helping block dirt and debris from entering the sealing area.

Key Features

• Precision sealing design for manual transmission input shaft service
• Reinforced outer case helps resist installation damage and adds durability
• Ribbed rubber inner diameter seals 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 build-up
• N-Polyacrylate material for transmission sealing applications
• Dimensions: 2.525 in. outside diameter, 1.378 in. shaft diameter, 2.520 in. housing bore, 0.315 in. width

Detailed Description

This Timken transmission seal is engineered for manual gearbox input shaft service where controlled lubricant retention is critical. The 223555 seal uses a reinforced outer case and a ribbed inner diameter to improve fit at the housing and shaft interface, while the contamination exclusion system helps reduce debris intrusion that can lead to leakage. Vent holes around the seal lip support lubricant circulation and heat management during operation. This part cross-references BBB Industries 13972 for the same application.

What It Helps Address

• Transmission fluid seepage at the input shaft
• Contamination entering the manual transmission sealing area
• Seal wear related to heat build-up around the lip
• Fit issues caused by minor shaft surface imperfections
• Leak concerns during BMW manual transmission service

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation. Clean the bore and shaft surface thoroughly, and inspect for scoring, corrosion, or burrs that could affect sealing performance. Install the seal squarely to avoid case distortion and confirm the lip seats evenly on the shaft. Compatible with front-position applications on 2000-2010 BMW models listed in the fitment data, including 2001-2006 BMW X5, front; 2001-2006 BMW 325xi, front; and 2003-2005 BMW Z4, front. Additional BMW coverage includes 2001-2007 BMW 530i, front, and 2007-2010 BMW X3, front.

Quality Assurance

Timken manufactures oil and grease seals with precision sealing designs and durable construction for drivetrain service. The 223555 part number is listed with OE-style dimensional specifications and application-specific fitment for select BMW manual transmission use.