Timken HA593427 Wheel Bearing and Hub Assembly - Front

Timken Wheel Bearing and Hub Assembly Overview

The Timken HA593427 wheel bearing and hub assembly is engineered for select BMW models including the 525i, 528i, 530i, 540i, and Z8. Designed as a non-driven hub, this assembly ensures precise fitment and reliable performance for your vehicle's driveline system.

• Flange bolt hole quantity: 4
• Wheel pilot diameter: 2.913 inches (74.00 mm)
• Brake pilot diameter: 3.110 inches (79.00 mm)
• Wheel stud quantity: 5
• Hub pilot diameter: 3.543 inches (90.00 mm)
• Flange offset: 1.998 inches (50.75 mm)
• Flange diameter: 5.472 inches (139.00 mm)
• Bolt circle diameter: 4.724 inches (120.00 mm)
• Drive type: Non-driven

Technical Details and Specifications

The Timken HA593427 hub assembly features a 4-hole flange bolt pattern and a 5-stud wheel configuration, matching the OEM specifications for compatible BMW models. The wheel pilot diameter of 2.913 inches (74.00 mm) and brake pilot diameter of 3.110 inches (79.00 mm) ensure proper alignment with the wheel and brake components. The hub pilot diameter measures 3.543 inches (90.00 mm), providing a secure fit on the axle. With a flange offset of 1.998 inches (50.75 mm) and a flange diameter of 5.472 inches (139.00 mm), this assembly maintains correct positioning relative to the vehicle’s suspension and braking system. The bolt circle diameter of 4.724 inches (120.00 mm) corresponds to the wheel mounting pattern, ensuring compatibility with factory wheels.

Compatible Vehicles and Applications

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

• BMW 525i
• BMW 528i
• BMW 530i
• BMW 540i
• BMW Z8

It is designed specifically for non-driven wheel positions, making it suitable for rear hubs on these vehicles where applicable.

Common Issues Addressed by This Hub Assembly

• Eliminates wheel bearing noise caused by wear or damage
• Resolves wheel vibration and wobble issues
• Corrects uneven tire wear due to hub misalignment
• Restores proper brake rotor alignment with brake pilot diameter
• Prevents hub assembly looseness and improves wheel stability

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before installation
• Verify the flange bolt hole quantity and wheel stud count match your vehicle’s specifications
• Clean the hub mounting surface to remove rust and debris for proper fitment
• Torque all bolts to manufacturer specifications to avoid premature wear
• Check wheel pilot and brake pilot diameters for compatibility with your wheels and brake rotors

Quality Assurance and Warranty

Timken wheel bearing and hub assemblies are manufactured to meet or exceed OEM standards for durability and performance. The HA593427 part number undergoes rigorous quality control to ensure precise dimensions and reliable operation. This product typically includes a limited warranty against defects in materials and workmanship, providing confidence in its long-term service life when installed correctly.