Timken HA590080 Wheel Bearing and Hub Assembly - Rear

Timken HA590080 Wheel Bearing and Hub Assembly Overview

The Timken HA590080 wheel bearing and hub assembly is engineered for reliable performance in select Chevrolet, Pontiac, and Saturn vehicles. Designed as a non-driven hub, this assembly ensures precise fitment and durability for models including the Chevrolet Malibu, Pontiac G6, and Saturn Aura.

• Flange bolt hole quantity: 4
• Wheel pilot diameter: 2.558 inches (64.97 mm)
• Brake pilot diameter: 2.577 inches (65.45 mm)
• Wheel stud quantity: 5
• Hub pilot diameter: 2.362 inches (60.00 mm)
• Flange offset: 3.091 inches (78.50 mm)
• Flange diameter: 5.512 inches (140.00 mm)
• Bolt circle diameter: 4.331 inches (110.00 mm)
• Drive type: Non-driven

Technical Details and Specifications

The Timken HA590080 is a wheel bearing and hub assembly designed to meet the exact specifications required by Chevrolet, Pontiac, and Saturn vehicles such as the Malibu, G6, Aura, Classic, and HHR. This assembly features a 5-stud wheel configuration and a 4-hole flange bolt pattern, ensuring secure mounting and compatibility with the vehicle’s brake and wheel components. The precise wheel pilot diameter of 2.558 inches and brake pilot diameter of 2.577 inches provide accurate alignment for the wheel and brake rotor, reducing vibration and promoting even wear.

The hub pilot diameter of 2.362 inches supports proper hub centering, while the flange offset of 3.091 inches maintains correct wheel positioning relative to the suspension. The flange diameter of 5.512 inches and bolt circle diameter of 4.331 inches are engineered to match factory specifications, ensuring a seamless fit and reliable operation.

Compatible Vehicles and Applications

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

• Chevrolet Malibu
• Pontiac G6
• Saturn Aura
• Chevrolet Classic
• Saturn HHR

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

Common Issues Addressed by This Assembly

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

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before installation
• Clean the hub mounting surface to remove rust and debris
• Verify the flange bolt hole pattern and stud count match the vehicle specifications
• Torque all fasteners to manufacturer-recommended specifications
• Check wheel bearing preload and adjust if necessary

Quality Assurance and Warranty

Timken wheel bearing and hub assemblies are manufactured to meet or exceed OEM standards for durability and performance. The HA590080 part number undergoes rigorous quality control to ensure precise fit and long service life. This product is backed by Timken’s limited warranty against defects in materials and workmanship, providing confidence in your replacement part.