National 710112 Automatic Transmission Output Shaft Seal - Left

Overview of National 710112 Automatic Transmission Output Shaft Seal

The National 710112 automatic transmission output shaft seal is engineered to provide reliable sealing performance for select Lexus, Toyota, and Scion models. Designed with durable polyacrylate material and a bi-directional lip design, this seal helps maintain transmission fluid integrity and prevent leaks.

• Inside diameter: 1.969 inches (50.000 mm)
• Outside diameter: 3.161 inches (80.300 mm)
• Thickness: 0.650 inches (16.500 mm)
• Sealing material: Polyacrylate for enhanced durability
• Bi-directional helix lip design for effective sealing
• Overall width with side lip: 0.906 inches (23.000 mm)
• Compatible with housing bore of 3.150 inches (80.000 mm)

Detailed Product Description

The National 710112 output shaft seal is constructed from polyacrylate, a material known for its resistance to heat, wear, and transmission fluids. Its bi-directional helix lip design ensures a secure seal around the output shaft, minimizing the risk of fluid leaks in automatic transmissions. With precise dimensions including a 1.969-inch inside diameter and a 3.161-inch outside diameter, this seal fits tightly within the housing bore of 3.150 inches, providing a reliable barrier against contaminants and fluid loss. The overall width of 0.906 inches, including the side lip, contributes to its effective sealing capability in demanding transmission environments.

Compatible Vehicles and Applications

This automatic transmission output shaft seal is compatible with a range of Lexus, Toyota, and Scion vehicles, including but not limited to:

• Lexus ES250, ES300, ES300h, ES330, RX330, RX350
• Toyota Avalon, Camry, Celica, Corolla, Highlander, Matrix, MR2, RAV4, Sienna, Solara
• Scion tC, xB, HS250h

It is designed specifically for use in automatic transmissions requiring a 40-type seal with the specified dimensions, ensuring proper fit and function.

Common Issues Addressed by the 710112 Output Shaft Seal

• Prevents automatic transmission fluid leaks around the output shaft
• Reduces contamination ingress that can cause premature transmission wear
• Maintains proper fluid pressure within the transmission system
• Helps avoid costly transmission repairs due to seal failure
• Ensures smooth operation and longevity of transmission components

Installation Notes and Tips

When installing the National 710112 output shaft seal, ensure the housing bore measures approximately 3.150 inches (80.000 mm) to guarantee proper fit. Clean the shaft and bore thoroughly before installation to remove debris and old sealant. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the bi-directional lip orientation matches the transmission fluid flow direction for optimal sealing performance.

Quality Assurance and Warranty

National manufactures the 710112 output shaft seal to meet industry standards for durability and performance. The use of polyacrylate material and precision engineering supports consistent sealing under normal operating conditions. While specific warranty details are not provided, National products typically adhere to quality control processes to ensure reliability in automotive transmission applications.