Timken 714679 Automatic Transmission Output Shaft Seal - Left

Timken 714679 Output Shaft Seal

The Timken 714679 automatic transmission output shaft seal is built for direct-fit service on select Cadillac, Buick, and Oldsmobile applications. It helps retain transmission lubricant while keeping dirt and debris out of the sealing area.

• Precision sealing design for lubricant retention and contamination control
• 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 buildup

Vehicle Fitment

• Fits 2006-2011 Buick Lucerne, left
• Fits 2006-2011 Cadillac DTS, left
• Fits 1994-2005 Cadillac DeVille, left
• Fits 1993-2004 Cadillac Seville, left
• Fits 1993-2002 Cadillac Eldorado, left
• Fits 1995-1999 Oldsmobile Aurora, left
• Fits 1993 Cadillac Allante, left

Detailed Description

Timken 714679 is an automatic transmission output shaft seal engineered for left-side applications listed above. In service on Cadillac DeVille, Cadillac Seville, Cadillac Eldorado, Buick Lucerne, and Cadillac DTS models, this seal helps maintain proper transmission fluid control at the output shaft while limiting contamination intrusion. The reinforced case supports installation durability, and the ribbed inner diameter is designed to conform around minor shaft imperfections for a more secure seal. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Seal Can Address

• Transmission fluid leaking from the output shaft area
• Debris entering the seal lip and contaminating the sealing surface
• Heat-related seal wear from poor lubricant circulation
• Seal seating issues caused by minor shaft surface imperfections
• Damage during installation on the transmission case or seal body

Installation Notes and Quality

Inspect the output shaft, sealing bore, and surrounding components before installation. Clean the sealing surfaces thoroughly and verify the left-side application against the vehicle listing before assembly. Timken’s oil and grease seal design uses contamination exclusion features and venting to support consistent sealing performance in transmission service.