National 710831 Transfer Case Input Shaft Seal

Overview of National Transfer Case Input Shaft Seal 710831

The National 710831 Transfer Case Input Shaft Seal is engineered to provide reliable sealing performance for transfer cases in select GM trucks and SUVs. Designed with a bi-directional lip and fluoro-elastomer material, this oil seal helps maintain proper lubrication and prevents contamination in your vehicle's transfer case.

• Inside diameter: 1.928 inches (48.971 mm)
• Outside diameter: 2.801 inches (71.133 mm)
• Thickness/width: 0.456 inches (11.582 mm)
• Bi-directional lip design for effective sealing
• Constructed from durable fluoro-elastomer material
• Compatible housing bore: 2.795 inches (70.933 mm)
• Part number: 710831

Detailed Product Description

This National transfer case input shaft seal (part number 710831) is designed to fit transfer cases on various Cadillac, Chevrolet, and GMC models, including the Avalanche, Canyon, Colorado, Escalade series, Sierra 1500/2500/3500 variants, Silverado 1500/2500/3500 models, Suburban 1500/2500, Tahoe, Yukon, and Yukon XL series. The seal features a bi-directional lip design that provides effective sealing against oil leaks and contaminants from both directions of shaft rotation.

Manufactured from fluoro-elastomer, the seal offers resistance to heat, oil, and wear, ensuring durability under demanding operating conditions. The precise dimensions—1.928 inch inside diameter, 2.801 inch outside diameter, and 0.456 inch thickness—ensure a proper fit within the transfer case housing bore of approximately 2.795 inches, maintaining optimal sealing performance.

Common Applications and Problem Solving

• Prevents oil leaks from the transfer case input shaft
• Protects transfer case internals from dirt and debris contamination
• Maintains lubrication integrity for smooth transfer case operation
• Addresses wear-related seal failures in older or high-mileage vehicles
• Helps reduce transfer case noise caused by oil leakage or contamination

Installation Notes and Tips

When installing the National 710831 input shaft seal, ensure the transfer case housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the seal orientation matches the bi-directional lip design for optimal performance. It is recommended to inspect the input shaft for wear or damage before installation to prevent premature seal failure.

Quality Assurance and Warranty

National transfer case seals are manufactured to meet industry standards for durability and performance. The fluoro-elastomer material provides resistance to heat and oil degradation, contributing to long service life. While specific warranty details are not provided, National products typically adhere to quality control processes to ensure reliable fit and function for compatible Cadillac, Chevrolet, and GMC models.