National 473229 Transfer Case Output Shaft Seal - Front, Rear or Rear Rearward

Overview of National Transfer Case Output Shaft Seal 473229

The National Transfer Case Output Shaft Seal 473229 is designed to provide reliable sealing performance for transfer cases in select Ford and Jeep vehicles. Engineered with nitrile material and precise dimensions, this oil seal helps maintain proper lubrication and prevent leaks in your Bronco, Cherokee, CJ5, CJ7, J10, J20, and Wagoneer transfer cases.

• Inside diameter: 1.562 inches (39.670 mm)
• Outside diameter: 2.506 inches (63.650 mm)
• Thickness/width: 0.312 inches (7.920 mm)
• Sealing material: durable nitrile rubber
• Redicoat coating for enhanced wear resistance
• Compatible with transfer case housing bore of 2.502 inches (63.550 mm)
• Zero duplication part ensuring unique fit and quality

Technical Details and Material Specifications

This transfer case output shaft seal from National is constructed from nitrile, a synthetic rubber known for its resistance to oil, heat, and abrasion. The seal features a Redicoat surface treatment that improves durability and extends service life. With an inside diameter of 1.562 inches and an outside diameter of 2.506 inches, it fits precisely into transfer case housings with a bore size of approximately 2.502 inches. The 0.312-inch thickness ensures a secure seal around the output shaft, preventing oil leaks and contamination.

Compatible Vehicles and Applications

This National 473229 output shaft seal is compatible with a range of Ford and Jeep models, including the Ford Bronco and Jeep Cherokee, as well as classic Jeep models like the CJ5, CJ7, J10, J20, and Wagoneer. It is specifically designed for transfer case applications where maintaining proper sealing is critical to drivetrain performance and longevity.

Common Issues Addressed by This Seal

• Prevents oil leaks from the transfer case output shaft
• Reduces contamination ingress that can damage internal components
• Maintains proper lubrication within the transfer case
• Helps avoid premature wear of the output shaft and bearings
• Eliminates noise and vibration caused by seal failure

Installation Notes and Tips

• Ensure the transfer case housing bore is clean and free of debris before installation
• Verify the shaft diameter matches the seal’s inside diameter of 1.562 inches
• Use appropriate tools to press the seal evenly into the housing bore without distortion
• Inspect the seal lip and Redicoat surface for damage prior to installation
• Apply a light coating of compatible lubricant on the seal lip to ease installation and initial operation

Quality Assurance and Warranty Information

National’s transfer case output shaft seal 473229 is manufactured to meet strict quality standards, ensuring consistent dimensions and material integrity. The use of nitrile material and Redicoat treatment supports long-term durability under typical operating conditions. This part is a zero duplication item, confirming its unique design and fitment. Warranty coverage details should be confirmed with the original equipment manufacturer or distributor.