National 510020 Wheel Bearing - Front or Rear

National 510020 Wheel Bearing Overview

The National 510020 wheel bearing is engineered for reliable performance in select Audi and Volkswagen models. Designed with a double row angular contact design, this wheel bearing supports smooth rotation and durability for vehicles such as the Audi A4 Quattro and Volkswagen Passat.

• Double row angular contact bearing design for enhanced load capacity
• Precise bore diameter of 1.535 inches (39 mm) for accurate fitment
• Outer diameter of 2.953 inches (75 mm) ensuring compatibility with specified models
• Width of 1.457 inches (37 mm) for proper seating and stability
• Inner race radius of 0.118 inches (3 mm) for optimized bearing performance

Technical Specifications and Design Details

The National 510020 wheel bearing features a double row angular contact design, which provides improved axial and radial load handling compared to single row bearings. The bore size measures 1.535 inches (39 mm), matching the inner race bore dimensions to ensure a precise fit. The bearing’s outer diameter is 2.953 inches (75 mm), with a consistent width of 1.457 inches (37 mm) across both inner and outer races. This E-3 type bearing is part of the Fwdb series, designed to meet the specific requirements of front wheel drive and all-wheel drive vehicles in the Audi and Volkswagen lineup.

Compatible Vehicles and Applications

This wheel bearing is compatible with a range of Audi and Volkswagen models, including:

• Audi 80 and 80 Quattro
• Audi 90 and 90 Quattro
• Audi A4 and A4 Quattro
• Audi A6 Quattro
• Audi A8 and A8 Quattro
• Audi Cabriolet and Coupe Quattro
• Volkswagen Passat
• Audi S4

It is designed to replace worn or damaged wheel bearings in these vehicles, ensuring proper wheel alignment and smooth rotation.

Common Issues Addressed by National 510020 Wheel Bearing

• Eliminates wheel noise caused by worn or damaged bearings
• Reduces vibration and uneven tire wear
• Restores proper wheel alignment and handling
• Prevents premature bearing failure due to load stress
• Improves overall vehicle safety and performance

Installation Notes and Tips

When installing the National 510020 wheel bearing, ensure the hub and spindle surfaces are clean and free of debris. Proper torque specifications should be followed to avoid bearing damage. It is recommended to inspect related components such as seals and hubs during installation to maintain optimal performance. Use appropriate tools to press the bearing into place without applying excessive force.

Quality Assurance and Warranty

National wheel bearings are manufactured to meet industry standards for durability and performance. The 510020 part number undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, National products typically come with manufacturer-backed quality assurance to support reliable operation in compatible Audi and Volkswagen vehicles.