National 710428 Drive Axle Shaft Seal - Front Right

National 710428 Drive Axle Shaft Seal Overview

The National 710428 drive axle shaft seal is engineered to provide reliable sealing performance for select Ford, Lincoln, Mazda, and Mercury vehicles. Designed with a bi-directional lip and constructed from durable fluoro-elastomer material, this oil seal helps maintain driveline integrity and prevent fluid leaks in demanding automotive applications.

• Inside diameter: 1.732 inches (44.00 mm)
• Outside diameter: 2.621 inches (66.58 mm)
• Flanged outside diameter: 3.125 inches (79.38 mm)
• Thickness: 0.394 inches (10.00 mm)
• Bi-directional lip design for enhanced sealing
• Material: Fluoro-elastomer for chemical and temperature resistance
• Compatible housing bore: 2.614 inches (66.40 mm)
• Overall width with side lip: 0.929 inches (23.59 mm)

Detailed Product Description

The National 710428 drive axle shaft seal is part of the 710400 series, designed specifically for driveline and axle sealing applications. Its fluoro-elastomer construction offers resistance to heat, oil, and other automotive fluids, ensuring long-lasting performance. The seal features a bi-directional lip design that provides effective sealing against contaminants and fluid leakage in both rotational directions. With precise dimensions including a 1.732-inch inside diameter and a 2.621-inch outside diameter, this seal fits securely within the housing bore of 2.614 inches, maintaining a tight seal around the axle shaft.

Compatible Vehicles and Applications

This drive axle shaft seal is compatible with a range of Ford, Lincoln, Mazda, and Mercury models, including the Ford Explorer, Explorer Sport, Explorer Sport Trac, Ranger, Mountaineer, and the Mazda B3000 and B4000, as well as the Lincoln Aviator. The part number 710428 ensures correct fitment for these vehicles, helping maintain driveline performance and prevent oil leaks.

Common Issues Addressed by the National 710428 Seal

• Prevents oil leaks from the drive axle shaft
• Protects axle components from dirt and debris contamination
• Maintains proper lubrication within the driveline system
• Reduces wear on axle bearings and related parts
• Helps avoid costly driveline repairs due to seal failure

Installation Notes and Tips

When installing the National 710428 drive axle shaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the bore without damaging the sealing lip. Verify the seal orientation matches the bi-directional lip design for optimal performance. Proper installation helps maintain the seal’s integrity and extends service life.

Quality Assurance and Warranty

National manufactures the 710428 drive axle shaft seal to meet industry standards for durability and performance. The fluoro-elastomer material and precise engineering contribute to consistent sealing under various operating conditions. While specific warranty details are not provided, National products typically adhere to quality assurance protocols to support reliable automotive repairs.