National 710496 Transfer Case Output Shaft Seal - Rear

National Transfer Case Output Shaft Seal Overview

The National 710496 transfer case output shaft seal is engineered to provide reliable sealing performance for a range of GM and Dodge vehicles. Designed with a bi-directional lip and constructed from durable fluoro-elastomer material, this oil seal helps maintain transfer case integrity by preventing fluid leaks and contamination.

• Inside diameter: 1.886 inches (47.9 mm)
• Outside diameter: 2.701 inches (68.6 mm)
• Flanged outside diameter: 3.213 inches (81.6 mm)
• Thickness: 0.469 inches (11.9 mm)
• Bi-directional lip design for enhanced sealing
• Material: Fluoro-elastomer for chemical and temperature resistance
• Compatible with multiple GM and Dodge models

Technical Specifications and Design Features

This National transfer case output shaft seal (part number 710496) features a precise fit with a housing bore diameter of 2.697 inches (68.5 mm) and an overall width including side lip of 1.383 inches (35.12 mm). The fluoro-elastomer sealing material offers excellent resistance to heat, oil, and other automotive fluids, ensuring long-lasting durability in demanding transfer case environments. The bi-directional lip design provides effective sealing against fluid leakage in both rotational directions, which is critical for transfer case output shafts subject to varying torque and rotational forces.

Compatible Vehicles and Applications

This transfer case output shaft seal is compatible with a wide range of vehicles including Chevrolet Avalanche 1500 and 2500, Silverado 1500 and 2500 HD, GMC Sierra 1500 and 2500 HD, Cadillac Escalade and Escalade ESV, Dodge Ram 1500, and other models such as the Blazer, Durango, and Yukon XL. It is specifically designed for transfer case sealing systems in these vehicles, ensuring proper fit and function.

Common Issues Addressed by the National 710496 Seal

• Prevents transfer case fluid leaks that can cause damage to internal components
• Reduces contamination from dirt and debris entering the transfer case
• Maintains proper lubrication by sealing the output shaft area
• Helps avoid costly transfer case repairs due to seal failure
• Improves overall drivetrain reliability in compatible GM and Dodge trucks and SUVs

Installation Notes and Tips

• Ensure the transfer case output shaft and bore are clean and free of debris before installation
• Use appropriate tools to avoid damaging the fluoro-elastomer seal during installation
• Verify correct orientation of the bi-directional lip to maintain effective sealing
• Check for proper fitment with the housing bore diameter of 2.697 inches (68.5 mm)
• Consult vehicle service manual for torque specifications and installation procedures

Quality Assurance and Warranty

National transfer case output shaft seals are manufactured to meet OEM standards for fit, form, and function. The fluoro-elastomer material and precision engineering ensure durability under typical operating conditions. While specific warranty details may vary, National products generally come with a limited warranty against defects in material and workmanship, providing confidence in product reliability.