National 710492 Drive Axle Shaft Seal - Front, Front Inner or Rear

National 710492 Drive Axle Shaft Seal Overview

The National 710492 drive axle shaft seal is engineered to provide reliable sealing performance for select Chevrolet, Ford, and GMC trucks and SUVs. Designed with durable polyacrylate material, this oil seal helps maintain axle integrity by preventing leaks and contamination.

• Constructed from high-quality polyacrylate for durability and resistance
• Inside diameter of 1.560 inches (39.6 mm) to fit specific axle shafts
• Outside diameter of 2.630 inches (66.8 mm) for precise housing bore fitment
• Thickness of 0.551 inches (14.0 mm) ensuring proper sealing depth
• Overall width with side lip measures 1.220 inches (31.0 mm) for enhanced sealing capability

Detailed Product Description and Specifications

The National 710492 drive axle shaft seal is part of the 710400 series, designed specifically for driveline and axle sealing applications. Its polyacrylate construction offers resistance to heat, oil, and wear, making it suitable for heavy-duty use in vehicles such as the Chevrolet Silverado 1500 HD, Ford F-250 Super Duty, and GMC Sierra 2500. The seal’s precise dimensions—including a 1.560 inch inside diameter and a 2.630 inch outside diameter—ensure a secure fit within the axle housing bore of 2.622 inches (66.6 mm). The 0.551 inch thickness and 1.220 inch overall width with side lip provide a tight seal to prevent oil leakage and protect the axle shaft from dirt and debris.

Compatible Vehicles and Applications

This drive axle shaft seal is compatible with a range of Chevrolet, Ford, and GMC models, including:

• Chevrolet Silverado 1500, Silverado 1500 HD, Silverado 2500, Suburban 2500, Tahoe, Yukon, Yukon XL 2500
• Ford Excursion, F-250 HD, F-250 Super Duty, F-350, F-350 Super Duty
• GMC Sierra 1500, Sierra 1500 HD, Sierra 2500

Common Issues Addressed by the National 710492 Seal

• Prevents oil leaks from the drive axle shaft area
• Protects axle components from dirt, dust, and moisture intrusion
• Reduces wear and tear on axle shafts by maintaining proper lubrication
• Helps maintain driveline performance and vehicle reliability
• Minimizes risk of axle seal failure under heavy-duty conditions

Installation Notes and Tips

When installing the National 710492 drive axle shaft seal, ensure the axle shaft and housing bore are clean and free of debris. Proper alignment during installation is critical to avoid seal damage. Use appropriate tools to press the seal evenly into the housing bore without distortion. Verify the seal’s orientation matches the original part to maintain effective sealing performance.

Quality Assurance and Warranty

National manufactures the 710492 seal to meet industry standards for driveline sealing components. The polyacrylate material and precise manufacturing tolerances contribute to consistent performance and durability. While specific warranty details are not provided, National products typically adhere to quality assurance protocols to support reliable operation in heavy-duty vehicle applications.