Timken 221710 Transfer Case Selector Shaft Seal

Transfer Case Selector Shaft Seal for Timken 221710

Timken 221710 is a transfer case selector shaft seal built to retain lubricant and block contaminants at the shaft interface. With a 1.111 in. outside diameter, 1.102 in. housing bore, 0.669 in. shaft diameter, and 0.276 in. width, it is sized for precise sealing in the transfer case assembly.

Compatible With select applications including 1997-2003 INFINITI QX4 transfer case output shaft seal TX10A, plus other listed Mitsubishi, Dodge, Ford, and Plymouth applications. This Timken 221710 seal is also cross-referenced to National 221710 for the same application.

Key Features

• Precision sealing design helps retain transfer case lubricant and keep debris out
• Reinforced outer case resists installation damage and supports durability
• Ribbed rubber inner diameter seals minor spindle imperfections and promotes seating
• Internal contamination exclusion system helps reduce debris intrusion that can lead to leakage
• Vent holes allow lubricant flow around the seal lip to reduce heat build-up
• Dimensions: 1.111 in. outside diameter, 1.102 in. housing bore, 0.669 in. shaft diameter, 0.276 in. width

Detailed Description

Timken 221710 is a transfer case selector shaft seal engineered for controlled sealing at the shaft opening. The seal’s reinforced outer case helps maintain shape during installation, while the ribbed rubber inner diameter supports a tighter seal against minor shaft wear or imperfections. Vent holes and contamination-exclusion features help manage heat and reduce the chance of debris-related leakage. For buyers searching for a transfer case output shaft seal for 1997-2003 INFINITI QX4 or related Mitsubishi, Dodge, Ford, and Plymouth fitments, this part provides a direct replacement option.

What It Helps Fix

• Transfer case fluid seepage at the selector shaft
• Contamination entering the transfer case through the shaft opening
• Leakage caused by minor shaft surface imperfections
• Heat-related seal wear from poor lubricant circulation at the lip
• Loss of sealing performance during transfer case service

Installation Notes and Tips

Inspect the shaft and housing bore before installation and clean away old seal material, dirt, and lubricant residue. Confirm the seal dimensions match the application before pressing it into place. Use care to avoid distorting the outer case during installation, and verify the shaft surface is smooth enough for proper lip contact. For fitment verification, match the vehicle application exactly, such as 1997-2003 INFINITI QX4 transfer case output shaft seal TX10A or the listed Dodge, Ford, Mitsubishi, and Plymouth applications.

Quality Assurance

Timken oil and grease seals are built with precision sealing designs and contamination-control features to support reliable service in drivetrain applications. Part number 221710 is manufactured to Timken’s sealing standards for transfer case use.