National 370169A Wheel Seal - Rear Inner

Overview of National 370169A Wheel Seal

The National 370169A wheel seal is engineered to provide reliable sealing performance for driveline and axle applications. Designed with precision dimensions and durable nitrile material, this oil bath seal helps maintain optimal lubrication and prevent contamination in compatible vehicle models.

• Part Number: 370169A
• Material: Nitrile for enhanced resistance to oil and wear
• Outside Diameter: 120.83 mm (4.761 inches)
• Housing Bore: 120.68 mm (4.751 inches)
• Shaft Diameter: 88.9 mm (3.5 inches)
• Width: 15.37 mm (0.605 inches)
• Installation Tool: RD297 recommended
• Type: 07 oil bath seal

Detailed Product Description

The National 370169A wheel seal is part of the 370000 series, designed specifically for driveline and axle sealing systems. Constructed from nitrile, this seal offers durability and resistance to oil degradation, making it suitable for maintaining the integrity of oil bath environments. The precise outside diameter of 120.83 mm and housing bore of 120.68 mm ensure a secure fit within the axle housing, while the 88.9 mm shaft diameter accommodates compatible axle shafts. With a width of 15.37 mm, this seal balances sealing efficiency and space requirements. The recommended installation tool RD297 facilitates proper seating and alignment during installation.

Compatible Vehicle Applications

This wheel seal is compatible with various driveline and axle assemblies requiring a 3.5-inch shaft diameter and matching housing bore dimensions. It is commonly used in applications involving vehicles such as Ford F-Series trucks, Chevrolet Silverado, and Dodge Ram models that specify these dimensions for their axle seals. Always verify fitment with your vehicle’s service manual or parts catalog to ensure compatibility with your specific make and model.

Common Issues Addressed by National 370169A Wheel Seal

• Prevents oil leaks from axle housing and wheel hub assemblies
• Protects driveline components from dirt and debris contamination
• Maintains proper lubrication within oil bath environments
• Reduces premature wear of axle shafts and bearings
• Helps avoid costly driveline repairs due to seal failure

Installation Notes and Tips

For optimal performance, use the RD297 installation tool to ensure the seal is properly seated without damage. Clean the housing bore and shaft thoroughly before installation to remove any debris or old sealant. Avoid using excessive force during installation to prevent distortion of the nitrile material. Inspect the shaft for wear or damage prior to installing the new seal to ensure a proper seal and long service life.

Quality Assurance and Warranty

National wheel seals are manufactured to meet industry standards for durability and performance. The 370169A seal undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, National products typically come with a limited warranty against manufacturing defects. Consult the product documentation or manufacturer for warranty terms applicable to this part.