National 415009 Wheel Seal - Front Inner

National 415009 Wheel Seal Overview

The National 415009 wheel seal is engineered for reliable sealing performance in Dodge W200, W250, W300, and W350 models. Designed with precision dimensions and durable nitrile material, this oil seal helps maintain driveline integrity by preventing oil leaks and contamination.

• Inside diameter: 2.750 inches (69.85 mm)
• Outside diameter: 3.881 inches (98.58 mm)
• Housing bore: 3.876 inches (98.45 mm)
• Width: 0.468 inches (11.89 mm)
• Material: Nitrile rubber for resistance to oil and wear
• Redicoat surface treatment for enhanced corrosion protection
• Series: 410000, Type: 41 oil seal

Detailed Product Description

The National 415009 wheel seal is part of the 410000 series, designed specifically for driveline and axle applications requiring precise sealing solutions. Its nitrile construction offers excellent resistance to petroleum-based fluids and mechanical wear, making it suitable for the demanding conditions found in Dodge W200, W250, W300, and W350 trucks. The seal’s inside diameter of 2.750 inches matches the shaft size, while the outside diameter of 3.881 inches fits securely within the housing bore of 3.876 inches, ensuring a tight, leak-free fit. The 0.468-inch width provides adequate sealing surface without compromising installation space. Additionally, the Redicoat coating enhances corrosion resistance, extending the service life of the seal in harsh environments.

Common Applications and Problem Solving

• Prevents oil leaks from wheel hubs and axle assemblies
• Protects driveline components from dirt and moisture intrusion
• Reduces wear on shafts by maintaining proper lubrication
• Helps maintain vehicle drivability by ensuring axle integrity
• Addresses common seal failures in Dodge W200, W250, W300, and W350 models

Installation Notes and Tips

• Ensure the shaft and housing bore are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore to avoid damage
• Verify the seal orientation matches the oil seal design, with the lip facing the lubricant side
• Check shaft surface for wear or damage that could compromise seal performance
• Apply a light coating of lubricant on the seal lip before installation to reduce initial friction

Quality Assurance and Warranty

National wheel seals, including part number 415009, are manufactured to meet industry standards for durability and performance. The use of nitrile material and Redicoat treatment ensures resistance to oil, heat, and corrosion. While specific warranty terms may vary, National products typically come with a limited warranty against manufacturing defects, providing confidence in the product’s reliability for Dodge W200, W250, W300, and W350 driveline applications.