Timken 512218 Wheel Bearing and Hub Assembly - Rear

Timken Wheel Bearing and Hub Assembly Overview

The Timken 512218 wheel bearing and hub assembly is engineered for reliable performance in select Pontiac and Toyota vehicles. Designed as a non-driven hub, this assembly supports smooth wheel rotation and precise fitment for models like the Toyota Corolla, Celica, Matrix, and Pontiac Vibe.

• Flange bolt hole quantity: 4 for secure mounting
• Wheel pilot diameter: 2.126 inches (54.00 mm)
• Brake pilot diameter: 2.165 inches (55.00 mm)
• Hub pilot diameter: 2.913 inches (74.00 mm)
• Flange offset: 2.146 inches (54.50 mm)
• Flange diameter: 5.315 inches (135.00 mm)
• Bolt circle diameter: 3.937 inches (100.00 mm)
• Drive type: Non-driven hub assembly

Technical Details and Specifications

The Timken 512218 wheel bearing and hub assembly features a flange with four bolt holes, ensuring a secure and stable connection to the vehicle’s suspension system. The wheel pilot diameter of 2.126 inches (54.00 mm) and brake pilot diameter of 2.165 inches (55.00 mm) provide precise alignment for the wheel and brake components, reducing vibration and wear. The hub pilot diameter measures 2.913 inches (74.00 mm), supporting the hub’s fitment to the axle. With a flange offset of 2.146 inches (54.50 mm) and a flange diameter of 5.315 inches (135.00 mm), this assembly maintains proper wheel positioning relative to the vehicle’s chassis. The bolt circle diameter of 3.937 inches (100.00 mm) matches factory specifications for the compatible models.

Compatible Vehicles and Applications

This Timken wheel bearing and hub assembly is compatible with the following vehicles:

• Pontiac Vibe
• Toyota Celica
• Toyota Corolla
• Toyota Matrix

It is designed specifically for non-driven wheel positions, making it suitable for front or rear hubs depending on the vehicle’s drivetrain configuration.

Common Issues Addressed by This Assembly

• Eliminates wheel bearing noise and roughness
• Resolves wheel wobble and vibration
• Corrects uneven tire wear caused by hub misalignment
• Prevents brake rotor runout due to worn hub pilots
• Restores proper flange offset for accurate wheel positioning

Installation Notes and Tips

When installing the Timken 512218 wheel bearing and hub assembly, ensure the mounting surface is clean and free of debris. Torque the flange bolts to the manufacturer’s specifications to maintain secure fitment. Verify the wheel pilot and brake pilot diameters align correctly with the wheel and brake components to avoid premature wear. This assembly is designed for non-driven hubs; confirm vehicle drive type before installation.

Quality Assurance and Warranty

Timken manufactures this wheel bearing and hub assembly to meet or exceed OEM standards for durability and performance. The 512218 part number undergoes rigorous quality control to ensure precise dimensions and reliable operation. Timken typically offers a limited warranty covering defects in materials and workmanship; consult Timken’s official documentation for specific warranty terms.