National 710141 Transfer Case Extension Housing Seal

Transfer Case Extension Housing Seal for Toyota and Lexus

National 710141 is a metric transfer case extension housing seal built for applications that use a 41 mm shaft and a 61.0 mm housing bore. It uses a polyacrylate sealing material and a counter-clockwise spiral lip design to support sealing performance in transfer case service.

Compatible with select Toyota 4Runner, Tacoma, Tundra, FJ Cruiser, Pickup, and T100 models, as well as Lexus GX470 and GX460 applications listed below. National 710141 is also referenced by part number 710141 for direct replacement searches.

Key Features

• Transfer case extension housing seal / oil seal design
• Polyacrylate sealing material for transfer case sealing applications
• Counter-clockwise spiral lip design
• Metric dimensions: 41.000 mm shaft, 61.200 mm outside diameter, 8.000 mm width
• Overall width with side lip: 12.500 mm
• National Series 710100, Type 40
• Cross-reference: SKF 16448

Detailed Description

National 710141 is engineered as a transfer case extension housing seal for vehicles using the specified Aisin transfer case configurations. The seal measures 1.614 in. inside diameter, 2.409 in. outside diameter, and 0.315 in. width, with a housing bore of 2.402 in. Its polyacrylate material and spiral lip profile are designed for transfer case sealing where shaft rotation and fluid retention are critical. This part number is commonly searched as 710141 for Toyota and Lexus transfer case repair work.

Fitment includes 2010-2019 Lexus GX460, 2013-2019 Toyota 4Runner, 2016-2019 Toyota Tacoma, 2007-2014 Toyota FJ Cruiser, 2003-2015 Toyota Tacoma, 2003-2012 Toyota 4Runner, 2003-2009 Lexus GX470, 2003-2006 Toyota Tundra, 2000-2004 Toyota Tundra, 2003-2004 Toyota Tacoma, 1988-2002 Toyota 4Runner, 1995-2002 Toyota Tacoma, 1993-1998 Toyota T100, and 1988-1995 Toyota Pickup with the listed Aisin transfer case and shaft configurations.

What It Helps Address

• Transfer case fluid seepage at the extension housing
• Oil leakage around the output shaft area
• Seal wear from age, heat, and shaft rotation
• Service issues on Toyota 4Runner, Tacoma, Tundra, FJ Cruiser, and Lexus GX models
• Replacement needs during transfer case maintenance or rebuilds

Installation Notes and Tips

Verify the transfer case code, shaft diameter, and housing bore before installation. Clean the sealing surface thoroughly and inspect the shaft for grooves or wear that could affect sealing. Confirm the application uses the listed Aisin VF1A, VF2A, VF2BM, VF2CM, VF4B, or VF4BM transfer case configuration before ordering National 710141.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle applications. This part is built to National’s sealing standards for transfer case service and is backed by the brand’s long-standing manufacturing experience.