National 710662 Transfer Case Output Shaft Seal - Rear

National Transfer Case Output Shaft Seal Overview

The National 710662 transfer case output shaft seal is engineered to provide reliable sealing performance for select Chevrolet, Jeep, Pontiac, and Saturn vehicles. Designed with a bi-directional lip and constructed from durable fluoro-elastomer material, this oil seal helps maintain transfer case integrity and prevent fluid leaks.

• Inside diameter: 1.457 inches (37.000 mm)
• Outside diameter: 3.095 inches (78.600 mm)
• Flanged outside diameter: 3.327 inches (84.500 mm)
• Thickness: 0.433 inches (11.000 mm)
• Overall width with side lip: 0.650 inches (16.500 mm)
• Bi-directional lip design for effective sealing
• Material: Fluoro-elastomer for enhanced chemical and temperature resistance
• Compatible with transfer case housing bore of 3.087 inches (78.400 mm)

Detailed Product Description

The National 710662 transfer case output shaft seal is specifically designed to fit transfer cases on Chevrolet Equinox, Jeep Liberty, Jeep TJ, Pontiac Torrent, Saturn Vue, and Jeep Wrangler models. Its fluoro-elastomer sealing material offers excellent resistance to heat, oil, and other automotive fluids, ensuring long-lasting performance under demanding conditions. The bi-directional lip design provides a secure seal around the output shaft, preventing fluid leakage and contamination ingress. With precise dimensions including a 1.457-inch inside diameter and a 3.095-inch outside diameter, this seal fits tightly within the transfer case housing bore, maintaining proper sealing pressure and durability.

Common Applications and Problem Solving

• Prevents transfer case fluid leaks that can cause drivetrain damage
• Eliminates contamination entry that leads to premature wear of internal components
• Maintains proper lubrication within the transfer case output shaft area
• Reduces the risk of transfer case overheating due to fluid loss
• Helps avoid costly repairs related to seal failure in Chevrolet Equinox, Jeep Liberty, and Jeep Wrangler vehicles

Installation Notes and Tips

• Ensure the transfer case housing bore is clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing to avoid damage
• Verify the shaft and seal dimensions match the specifications: 1.457-inch shaft diameter and 3.095-inch outside diameter
• Lubricate the seal lip lightly with transfer case fluid prior to installation for smoother fitment
• Inspect the output shaft for wear or damage before installing the new seal

Quality Assurance and Warranty

National transfer case output shaft seals are manufactured to meet strict industry standards for durability and performance. The fluoro-elastomer material ensures resistance to heat and chemical degradation, providing reliable sealing over time. The 710662 part number is part of National's 710600 series, known for consistent quality in gaskets and sealing systems. While specific warranty details may vary, National typically offers coverage against manufacturing defects to support professional repair confidence.