National 511031 Wheel Bearing - Rear Inner

Reliable Wheel Bearing for Toyota 4Runner, Hilux, Tacoma, and Tundra

The National 511031 wheel bearing is engineered to provide dependable performance for select Toyota models including the 4Runner, Hilux, Tacoma, and Tundra. Designed with precision, this double row angular contact bearing ensures smooth wheel rotation and durability under various driving conditions.

• Double row angular contact design for enhanced load capacity
• Inner race bore diameter of 1.575 inches (40 mm) for precise fitment
• Outer race outside diameter of 3.543 inches (90 mm) for compatibility with specified Toyota models
• Width of 1.102 inches (28 mm) ensuring proper alignment and stability
• Part number 511031 for accurate identification and replacement

Technical Specifications and Design Features

This National wheel bearing (part number 511031) features a double row angular contact design, which provides improved axial and radial load handling compared to single row bearings. The inner race bore measures 1.575 inches (40 mm) with a radius of 0.122 inches (3.099 mm), while the outer race has an outside diameter of 3.543 inches (90 mm) and a radius of 0.079 inches (2 mm). The bearing width is 1.102 inches (28 mm), matching the requirements for the Toyota 4Runner, Hilux, Tacoma, and Tundra models. This E-3 type bearing from the Rwdb series is designed to meet the demands of driveline and axle applications, ensuring reliable wheel support and rotation.

Compatible Vehicles and Applications

This wheel bearing is compatible with the following Toyota models:

• Toyota 4Runner
• Toyota Hilux
• Toyota Tacoma
• Toyota Tundra

It is specifically designed for use in driveline and axle assemblies where precise fitment and durability are critical.

Common Issues Addressed by This Wheel Bearing

• Eliminates wheel noise caused by worn or damaged bearings
• Prevents wheel wobble and vibration for improved vehicle stability
• Reduces uneven tire wear due to bearing failure
• Restores smooth wheel rotation and handling performance
• Helps maintain proper alignment of driveline components

Installation Notes and Tips

When installing the National 511031 wheel bearing, ensure the hub and spindle surfaces are clean and free of debris. Use appropriate tools to press the bearing into place without causing damage. Verify the bearing orientation matches the double row angular contact design specifications. It is recommended to inspect related components such as seals and hubs during installation to ensure optimal performance and longevity.

Quality Assurance and Warranty

National wheel bearings are manufactured to meet industry standards for durability and performance. The 511031 bearing undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in the product's reliability.