National 710495 Transfer Case Output Shaft Seal - Front

Overview of National Transfer Case Output Shaft Seal 710495

The National Transfer Case Output Shaft Seal 710495 is engineered to provide reliable sealing performance for select GM trucks and SUVs. Designed with durable fluoro-elastomer material, this oil seal helps maintain transfer case integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.811 inches (46.000 mm)
• Outside diameter: 2.884 inches (73.250 mm)
• Thickness/width: 0.572 inches (14.530 mm)
• Material: Fluoro-elastomer for enhanced chemical and temperature resistance
• Compatible with transfer case housing bore approximately 2.874 inches (73.000 mm)

Technical Details and Specifications

This transfer case output shaft seal from National, part number 710495, belongs to the 710400 series and is constructed from fluoro-elastomer, a material known for its resistance to heat, oil, and wear. The seal’s precise dimensions, including a 1.811-inch inside diameter and 2.884-inch outside diameter, ensure a secure fit around the output shaft and housing bore. With a thickness of 0.572 inches, it provides a robust barrier against fluid leakage, helping to maintain optimal transfer case operation.

Compatible Vehicles and Applications

This transfer case output shaft seal is compatible with a range of General Motors vehicles, including Chevrolet, GMC, and Cadillac models. Specifically, it fits Chevrolet Avalanche 1500 and 2500, Silverado 1500, 2500, and 3500 series (including Classic and HD variants), Suburban 1500 and 2500, Tahoe, as well as GMC Sierra 1500, 2500, and 3500 series, Yukon, Yukon XL 1500 and 2500, and Cadillac Escalade and Escalade EXT. This makes it suitable for owners seeking a reliable replacement seal for their transfer case output shaft.

Common Issues Addressed by the Transfer Case Output Shaft Seal

• Prevents transfer case fluid leaks that can lead to low fluid levels and damage
• Protects internal transfer case components from dirt and debris contamination
• Reduces risk of premature wear on the output shaft and bearings
• Maintains proper lubrication and transfer case performance
• Helps avoid costly transfer case repairs due to seal failure

Installation Notes and Tips

When installing the National 710495 transfer case output 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 fluoro-elastomer material. Verify the seal’s orientation matches the original part to maintain proper sealing function. It is recommended to inspect the output shaft for wear or damage before installation and replace if necessary to ensure a proper seal.

Quality Assurance and Warranty Information

National transfer case output shaft seals are manufactured to meet OEM specifications, ensuring reliable fit and function. The fluoro-elastomer sealing material offers durability under high temperature and chemical exposure typical in automotive transfer cases. Part number 710495 is backed by National’s quality standards, providing confidence in long-term performance. Please refer to National’s warranty policy for specific coverage details.