FAG SS2123 Transfer Case Shift Shaft Seal - Power Steering

Transfer Case Shift Shaft Seal for Toyota and Lexus

The FAG SS2123 transfer case shift shaft seal is built for applications that need a precise sealing fit around the shift shaft area. With nitrile sealing material and a rubber spring-loaded design, it helps keep contaminants out while maintaining a stable seal in demanding driveline environments.

Fits 2010-2019 Lexus GX460, N/A; Fits 2005-2019 Toyota 4Runner, N/A; Fits 2005-2019 Toyota Tacoma, N/A; and other listed Toyota, Lexus, Chevrolet, Geo, and Honda applications.

Key Features

• Part number: SS2123
• Transfer case shift shaft seal for driveline sealing service
• Nitrile sealing material for resistance to oil and fluid exposure
• Rubber seal with spring design for consistent sealing contact
• Bore diameter: 0.984 in. / 24.994 mm
• Seal outside diameter: 0.993 in. / 25.222 mm
• Seal width: 0.591 in. / 15.011 mm
• Cross-reference: National 221510

Detailed Description

FAG SS2123 is a transfer case shift shaft seal designed for vehicles that require accurate sealing at the shift shaft interface. The nitrile sealing material is selected for durability in fluid-exposed driveline locations, while the rubber and spring construction helps maintain sealing pressure over time. This seal is sized to match the specified bore, outside diameter, and width dimensions for the listed applications, including Toyota 4Runner, Tacoma, Tundra, FJ Cruiser, Sequoia, Corolla, Celica, T100, and Lexus GX460 and GX470 models.

This part cross-references National 221510 for the same application.

What It Helps Address

• Fluid seepage at the transfer case shift shaft
• Contamination from dirt, dust, and moisture entering the sealed area
• Loss of lubricant around the shaft seal interface
• Wear related to degraded or hardened sealing material
• Service replacement for leaking or damaged transfer case seals

Installation Notes and Tips

Verify shaft diameter, bore diameter, seal outside diameter, and seal width before installation. Clean the sealing surface and inspect the shaft for grooves, corrosion, or damage that could affect sealing performance. Use proper seal installation tools to avoid distortion, and confirm the seal is seated evenly in the housing. For fitment, confirm the exact vehicle application and transfer case configuration before ordering.

Quality Assurance

FAG sources sealing components to meet vehicle manufacturer specifications and applies supplier quality standards to the design of its seals. The SS2123 is engineered for demanding sealing requirements in transfer case service and is built around the dimensional and material specifications listed above.