National 710141 Transfer Case Extension Housing Seal

Overview of National Transfer Case Extension Housing Seal 710141

The National 710141 Transfer Case Extension Housing Seal is engineered for reliable sealing performance in select Lexus and Toyota vehicles. Designed to maintain optimal transfer case function, this oil seal is compatible with models such as the Lexus GX460, GX470, and Toyota Tacoma, Tundra, 4Runner, FJ Cruiser, Pickup, and T100.

• Inside diameter: 1.614 inches (41.000 mm)
• Outside diameter: 2.409 inches (61.200 mm)
• Thickness: 0.315 inches (8.000 mm)
• Sealing material: Polyacrylate for durability and resistance
• Counter-clockwise spiral lip design for effective sealing
• Overall width with side lip: 0.492 inches (12.500 mm)
• Housing bore compatibility: 2.402 inches (61.000 mm)

Technical Details and Material Specifications

This transfer case extension housing seal from National is constructed using polyacrylate, a material known for its resistance to heat, oil, and wear. The seal features a counter-clockwise spiral lip design that enhances sealing efficiency by preventing fluid leakage under various operating conditions. With precise dimensions including a 1.614-inch inside diameter and a 2.409-inch outside diameter, it fits securely within the housing bore of 2.402 inches, ensuring a tight seal for transfer case shafts.

Compatible Vehicles and Applications

The National 710141 seal is specifically designed for use in transfer cases of Lexus and Toyota vehicles. Compatible models include:

• Lexus GX460 and GX470
• Toyota 4Runner, FJ Cruiser, Tacoma, Tundra, Pickup, and T100

This part is essential for maintaining the integrity of the transfer case extension housing, preventing oil leaks and contamination.

Common Issues Addressed by This Seal

• Prevents oil leaks from the transfer case extension housing
• Reduces contamination ingress that can damage transfer case components
• Minimizes wear on the transfer case shaft by maintaining proper lubrication
• Helps maintain transfer case pressure and fluid levels
• Prevents premature failure of transfer case seals and bearings

Installation Notes and Tips

• Ensure the housing bore and shaft are clean and free of debris before installation
• Use appropriate tools to avoid damaging the seal during installation
• Verify the seal orientation matches the counter-clockwise spiral lip design for proper sealing
• Check for proper fitment with the 1.614-inch shaft diameter and 2.402-inch housing bore
• Lubricate the seal lip lightly with transfer case fluid before installation to reduce initial wear

Quality Assurance and Warranty

National transfer case seals are manufactured to meet industry standards for durability and performance. The 710141 seal undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product reliability.