Timken 225874 Transfer Case Output Shaft Seal - Front

Transfer Case Output Shaft Seal for Toyota RF1A

Timken 225874 is a transfer case output shaft seal built for Toyota RF1A applications. It is designed to retain lubricant at the output shaft while helping block dirt, moisture, and other contaminants from entering the transfer case.

• Precision sealing design for transfer case lubricant control
• Reinforced outer case helps resist installation damage
• Ribbed rubber inner diameter helps seal minor spindle imperfections
• Internal contamination exclusion system helps reduce debris intrusion
• Vent holes promote lubricant flow around the seal lip to help manage heat
• N-Polyacrylate sealing material for transfer case service

Fitment and Application Details

Compatible with front transfer case applications on Toyota 4Runner, Tacoma, Tundra, RAV4, T100, Pickup, and Van models equipped with the RF1A transfer case. Timken 225874 matches the listed housing bore of 74.00 mm, outside diameter of 74.12 mm, shaft diameter of 58.00 mm, and width of 13.00 mm for proper sealing dimensions.

• Fits 1984-2001 Toyota 4Runner, Front, RF1A
• Fits 1995-2002 Toyota Tacoma, Front, RF1A
• Fits 2000-2002 Toyota Tundra, Front, RF1A
• Fits 1996-2002 Toyota RAV4, Front, RF1A
• Fits 1993-1998 Toyota T100, Front, RF1A
• Fits 1979-1995 Toyota Pickup, Front, RF1A
• Fits 1987-1989 Toyota Van, Front, RF1A

This part cross-references Gates 22819 for the same application.

What This Seal Helps Address

• Transfer case oil seepage at the output shaft
• Grease loss from the sealing area
• Contaminant entry that can accelerate seal wear
• Heat-related seal deterioration around the lip area
• Leak issues caused by minor shaft surface imperfections

Installation Notes and Tips

Inspect the shaft and housing bore before installation and confirm the dimensions match the application. Clean the sealing surface thoroughly, verify the seal is seated squarely, and avoid nicking the lip or outer case during installation. Use the RF1A application details to confirm the correct front transfer case position before ordering.

Quality Assurance

Timken oil and grease seals use precision sealing designs, a reinforced outer case, and an internal contamination exclusion system to support reliable transfer case service. The vented lip design also helps move lubricant around the seal to reduce heat build-up during operation.