National 711116 Transfer Case Output Shaft Seal - Front

Overview of National 711116 Transfer Case Output Shaft Seal

The National 711116 transfer case output shaft seal is engineered for reliable sealing performance in select Chrysler and Dodge vehicles. Designed to maintain proper lubrication and prevent fluid leaks, this oil seal is compatible with models such as the Chrysler Pacifica, Dodge Avenger, Journey, and Sebring.

• Flanged outside diameter: 3.150 inches (80 mm)
• Housing bore diameter: 2.953 inches (75 mm)
• Overall width with side lip: 0.512 inches (13 mm)
• Material: durable polyacrylate for enhanced resistance
• Bi-directional lip design for effective sealing under varying rotational directions
• Shaft diameter compatibility: 1.575 inches (40 mm)
• Part number: 711116, series 711100

Technical Details and Material Specifications

This transfer case output shaft seal features a bi-directional helix lip design that provides effective sealing against oil leaks in both rotational directions of the shaft. The polyacrylate material offers strong resistance to heat, wear, and chemical degradation, ensuring durability in demanding transfer case environments. With a flanged outside diameter of 3.150 inches (80 mm) and a housing bore of 2.953 inches (75 mm), the seal fits precisely within the transfer case housing. The overall width, including the side lip, measures 0.512 inches (13 mm), providing a secure fit and reliable sealing surface.

Compatible Vehicles and Applications

This National 711116 transfer case output shaft seal is compatible with the following vehicles:

• Chrysler Pacifica
• Dodge Avenger
• Dodge Journey
• Chrysler Sebring

It is specifically designed to replace worn or damaged seals in these models, helping to maintain transfer case integrity and prevent fluid contamination or leakage.

Common Issues Addressed by This Seal

• Prevents transfer case fluid leaks that can lead to component damage
• Reduces contamination of transfer case internals by dirt and debris
• Maintains proper lubrication for output shaft bearings and gears
• Minimizes wear caused by fluid loss and overheating
• Helps avoid costly transfer case repairs due to seal failure

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 without distortion
• Verify shaft diameter matches the 1.575 inch (40 mm) specification for proper fit
• Inspect the output shaft for wear or damage prior to seal installation
• Apply a light coating of transfer case fluid to the seal lip to aid initial lubrication

Quality Assurance and Warranty

National transfer case output shaft seals are manufactured to meet OEM specifications for fit and function. The polyacrylate material and bi-directional lip design contribute to long service life under normal operating conditions. Part number 711116 is part of the 711100 series, ensuring consistent quality and performance. Warranty coverage details should be confirmed with the original equipment manufacturer or distributor.