National 710661 Transfer Case Output Shaft Seal - Front or Rear

Overview of National 710661 Transfer Case Output Shaft Seal

The National 710661 transfer case output shaft seal is engineered to provide reliable sealing performance for select Cadillac, Chrysler, Dodge, Kia, and Ram vehicles. Designed with precision dimensions and durable polyacrylate material, this oil seal helps maintain transfer case integrity and prevent fluid leaks.

• Inside diameter options: 1.886 inch (47.900 mm)
• Outside diameter: 2.756 inch (70.000 mm)
• Seal thickness: 0.512 inch (13.000 mm)
• Bi-directional lip design for effective sealing
• Constructed from polyacrylate sealing material for durability
• Compatible housing bore diameter: 2.750 inch (69.850 mm)
• Overall width with side lip: 0.866 inch (22.000 mm)

Detailed Product Description

This National transfer case output shaft seal, part number 710661, is part of the 710600 series and is specifically designed to fit transfer cases requiring a 40-type seal. The seal features a bi-directional lip design that enhances sealing efficiency by preventing oil leakage in both rotational directions. Manufactured from polyacrylate, the seal material offers resistance to heat and wear, ensuring long-lasting performance under demanding operating conditions.

With an inside diameter of 1.886 inches (47.900 mm) and an outside diameter of 2.756 inches (70.000 mm), this seal fits precisely into a housing bore of 2.750 inches (69.850 mm). The thickness of 0.512 inches (13.000 mm) and an overall width including the side lip of 0.866 inches (22.000 mm) provide a secure fit that maintains transfer case fluid containment.

Compatible Vehicles and Applications

This transfer case output shaft seal is compatible with a range of vehicles, including:

• Cadillac CTS, SRX, and STS models
• Chrysler 300 and Magnum
• Dodge Challenger and Charger
• Kia Borrego
• Ram 2500 and 3500 trucks

It is designed to replace worn or damaged seals in these models’ transfer cases, helping to maintain proper lubrication and prevent contamination.

Common Issues Addressed by This Seal

• Prevents transfer case fluid leaks that can cause low lubrication
• Reduces risk of transfer case damage due to contamination
• Eliminates noise and vibration caused by worn seals
• Maintains proper pressure and fluid retention within the transfer case
• Helps avoid costly repairs related to transfer case failure

Installation Notes and Tips

When installing the National 710661 transfer case output shaft seal, ensure the 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 shaft and surrounding components for wear before installation to ensure a proper seal.

Quality Assurance and Warranty

National manufactures this transfer case output shaft seal to meet industry standards for durability and fitment. The polyacrylate material and precise dimensions contribute to consistent sealing performance. While specific warranty details are not provided, National products typically adhere to quality control processes to ensure reliability in automotive applications.