National 473204 Transfer Case Output Shaft Seal - Rear

Overview of National Transfer Case Output Shaft Seal 473204

The National Transfer Case Output Shaft Seal 473204 is engineered to provide reliable sealing performance for transfer cases in select Chevrolet, Dodge, Ford, and GMC vehicles. Designed with durable nitrile material and precise dimensions, this oil seal helps maintain proper lubrication and prevents fluid leaks in your vehicle's drivetrain.

• Inside diameter: 2.125 inches (53.980 mm)
• Outside diameter: 2.754 inches (69.950 mm)
• Thickness/width: 0.375 inches (9.530 mm)
• Sealing material: Nitrile for resistance to oil and heat
• Redicoat coating for enhanced durability
• Compatible with transfer case housing bore of 2.750 inches (69.850 mm)
• Zero duplication part ensuring unique fit and quality

Detailed Product Description

This National transfer case output shaft seal (part number 473204) is part of the 470000 series and is specifically designed to fit transfer cases in a range of Chevrolet, Dodge, Ford, and GMC trucks and SUVs. The seal features a nitrile construction that offers excellent resistance to oil, heat, and wear, making it suitable for demanding automotive environments. The Redicoat treatment further enhances the seal's longevity by providing additional protection against corrosion and abrasion.

With an inside diameter of 2.125 inches and an outside diameter of 2.754 inches, this seal fits transfer case output shafts and housings precisely, ensuring a tight seal to prevent fluid leakage. The thickness of 0.375 inches provides the necessary robustness to maintain sealing integrity under operational stresses.

Compatible Vehicles and Applications

This transfer case output shaft seal is compatible with various models, including Chevrolet Blazer, K5 Blazer, K10, K10 Suburban, K20, K20 Suburban, K30, K1500, K1500 Suburban, K2500, K2500 Suburban, K3500, Dodge Ramcharger, Ford F-100, F-150, F-250, F-350, and GMC Jimmy, W100, W150, W200, W300. It is designed to fit transfer cases with a housing bore of approximately 2.750 inches, ensuring proper fitment and function.

Common Issues Addressed by This Seal

• Prevents transfer case fluid leaks around the output shaft
• Reduces contamination ingress into the transfer case
• Maintains proper lubrication for transfer case components
• Minimizes wear on the output shaft and housing bore
• Helps avoid costly drivetrain repairs due to seal failure

Installation Notes and Tips

• Ensure the transfer case output shaft and housing bore are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without damage
• Verify the seal orientation matches manufacturer specifications for proper sealing
• Inspect the output shaft for wear or damage prior to installing the new seal
• Apply a light coating of transfer case fluid to the seal lip to aid installation and initial lubrication

Quality Assurance and Warranty

National transfer case output shaft seal 473204 is manufactured to meet industry standards for durability and performance. The nitrile material and Redicoat treatment provide resistance to oil, heat, and abrasion, contributing to a reliable service life. This part is a zero duplication item, ensuring unique quality and fit. Warranty coverage details should be confirmed with the original equipment manufacturer or distributor.