National 710536 Differential Pinion Seal - Front Outer

National 710536 Differential Pinion Seal Overview

The National 710536 differential pinion seal is engineered to provide reliable sealing performance for driveline applications. Designed with a bi-directional lip and constructed from durable fluoro-elastomer material, this oil seal is compatible with various Cadillac, Chevrolet, GMC, and Hummer models.

• Inside diameter options: 1.943 inch (49.350 mm)
• Outside diameter: 2.921 inch (74.200 mm)
• Flanged outside diameter: 3.091 inch (78.500 mm)
• Thickness: 0.453 inch (11.500 mm)
• Bi-directional lip design for enhanced sealing
• Material: Fluoro-elastomer for chemical and temperature resistance
• Fits housing bore of 2.913 inch (74.000 mm)

Technical Details and Specifications

The National 710536 differential pinion seal features a bi-directional lip design that helps prevent oil leakage in both rotational directions, ensuring effective sealing under varying operating conditions. The fluoro-elastomer construction offers resistance to heat, oil, and other automotive fluids, extending the service life of the seal. With an inside diameter of 1.943 inches and an outside diameter of 2.921 inches, this seal fits precisely into the housing bore of 2.913 inches, providing a secure fit for the differential pinion shaft.

Compatible Vehicles and Applications

This differential pinion seal is compatible with a range of GM vehicles, including Cadillac ATS, CTS, Escalade, Escalade ESV, and Escalade EXT; Chevrolet Avalanche 1500, 2500, Silverado 1500, 2500, 3500, Suburban 1500, 2500, Tahoe; GMC Sierra 1500, 2500, 3500, Yukon, Yukon XL; and Hummer H2. The part number 710536 ensures correct fitment for these models, making it suitable for driveline and axle sealing needs.

Common Issues Addressed by the National 710536 Seal

• Prevents differential oil leaks that can cause driveline damage
• Reduces contamination ingress into the differential assembly
• Maintains proper lubrication by sealing the pinion shaft
• Minimizes wear on differential components due to fluid loss
• Helps avoid costly repairs related to seal failure

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 bi-directional lip design for optimal performance
• Check shaft and bore dimensions to confirm compatibility with the 710536 seal
• Apply a light coat of lubricant on the seal lip to ease installation and prevent damage

Quality Assurance and Warranty

National manufactures the 710536 differential pinion seal to meet industry standards for durability and performance. The fluoro-elastomer material and precise engineering contribute to long-lasting service life. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the product.