National 239155 Wheel Seal - Front Inner

Overview of National 239155 Wheel Seal for Mercedes-Benz

The National 239155 wheel seal is engineered to provide reliable sealing performance for select Mercedes-Benz models. Designed with precision, this oil seal helps maintain driveline integrity by preventing lubricant leaks and contamination.

• Inside diameter options: 1.772 inch (45 mm)
• Outside diameter: 2.530 inch (64.27 mm)
• Width: 0.472 inch (12 mm)
• Bi-directional lip design for enhanced sealing
• Constructed from durable nitrile material
• Compatible with housing bore of 2.520 inch (64 mm)

Technical Details and Specifications

The National 239155 wheel seal features a bi-directional lip design that ensures effective sealing against oil leaks in both rotational directions. Its nitrile construction offers resistance to heat, oil, and wear, making it suitable for demanding automotive applications. The seal measures 1.772 inches (45 mm) in inside diameter and 2.530 inches (64.27 mm) in outside diameter, with a width of 0.472 inches (12 mm). It fits housing bores measuring approximately 2.520 inches (64 mm), providing a secure and precise fit.

Compatible Mercedes-Benz Models

This wheel seal is compatible with a range of Mercedes-Benz vehicles, including the 190E, 260E, 300CE, 300D, 300E, 300TD, 300TE, 560SL, and E320 models. The National 239155 part number ensures you receive the correct seal designed specifically for these driveline applications.

Common Applications and Problem Resolution

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

Installation Notes and Tips

When installing the National 239155 wheel seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the bore without damaging the sealing lip. Verify the seal orientation matches the bi-directional lip design for optimal performance. Proper installation will help maintain the seal’s integrity and extend service life.

Quality Assurance and Warranty

Manufactured by National, a trusted name in automotive sealing solutions, the 239155 wheel seal meets industry standards for durability and performance. The nitrile material and precise dimensions contribute to consistent sealing reliability. Warranty details should be confirmed with the original equipment provider or distributor.