National 710697 Differential Pinion Seal - Front Outer

National 710697 Differential Pinion Seal Overview

The National 710697 differential pinion seal is engineered to provide reliable sealing performance for driveline components. Designed specifically for select Lexus and Toyota models, this oil seal helps maintain optimal differential function by preventing fluid leaks and contamination.

• Inside diameter: 1.614 inches (41.000 mm)
• Outside diameter: 2.921 inches (74.200 mm)
• Thickness: 0.433 inches (11.000 mm)
• Overall width with side lip: 0.728 inches (18.500 mm)
• Material: Polyacrylate for enhanced durability
• Bi-directional lip design for effective sealing under varying rotational directions
• Compatible housing bore: 2.913 inches (74.000 mm)

Technical Details and Specifications

This differential pinion seal from National features a bi-directional lip design that ensures a tight seal around the pinion shaft, reducing the risk of oil leaks in the differential assembly. Constructed from polyacrylate material, it offers resistance to heat and wear, suitable for the demanding conditions of driveline operation. The seal’s precise dimensions, including a 1.614-inch inside diameter and 2.921-inch outside diameter, make it a direct replacement for OEM parts in compatible vehicles.

Compatible Vehicles and Applications

The National 710697 differential pinion seal is compatible with a range of Lexus and Toyota models, including the 4Runner, FJ Cruiser, GX460, GX470, Land Cruiser, LX470, Sequoia, and Tacoma. This part is designed to fit the differential pinion shaft and housing bore dimensions specific to these vehicles, ensuring proper fit and function.

• Prevents oil leaks from the differential pinion shaft
• Protects differential components from dirt and debris contamination
• Maintains proper lubrication within the differential assembly
• Reduces wear on driveline components by preserving oil integrity
• Helps avoid costly differential repairs due to seal failure

Installation Notes and Tips

When installing the National 710697 differential pinion seal, ensure the housing bore and shaft are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Verify the seal orientation matches the bi-directional lip design for optimal performance. It is recommended to inspect the pinion shaft for wear or damage before installation to prevent premature seal failure.

Quality Assurance and Warranty

National manufactures the 710697 differential pinion seal to meet industry standards for durability and performance. The polyacrylate material and precise engineering contribute to a reliable sealing solution for Lexus and Toyota differentials. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the product’s quality.