Timken HA590116 Wheel Bearing and Hub Assembly - Rear

Timken HA590116 Wheel Bearing and Hub Assembly Overview

The Timken HA590116 wheel bearing and hub assembly is engineered for reliable performance in select Buick, Chevrolet, Pontiac, and Saturn vehicles. Designed as a non-driven hub, this assembly ensures precise fitment and durability for models like the Montana, Relay, Terraza, and Uplander.

• Flange bolt hole quantity: 4
• Wheel pilot diameter: 2.756 inches (70.00 mm)
• Brake pilot diameter: 2.780 inches (70.61 mm)
• Wheel stud quantity: 6
• Hub pilot diameter: 2.827 inches (71.80 mm)
• Drive type: Non-driven
• Flange offset: 2.559 inches (65.00 mm)
• Flange diameter: 150.59 mm (5.928 inches)
• Bolt circle diameter: 115.02 mm (4.528 inches)

Technical Details and Specifications

The HA590116 wheel bearing and hub assembly features a 6-stud wheel configuration with a 4-hole flange bolt pattern, providing secure mounting and compatibility with the specified GM vehicles. The wheel pilot diameter of 2.756 inches (70.00 mm) and brake pilot diameter of 2.780 inches (70.61 mm) ensure proper alignment with the brake components. The hub pilot diameter measures 2.827 inches (71.80 mm), supporting precise hub centering. With a flange offset of 2.559 inches (65.00 mm) and a flange diameter of 150.59 mm (5.928 inches), this assembly maintains correct wheel positioning and load distribution. The bolt circle diameter of 115.02 mm (4.528 inches) matches factory specifications for a secure fit.

Compatible Vehicles and Applications

This Timken HA590116 assembly is compatible with the following makes and models:

• Buick Montana
• Chevrolet Uplander
• Pontiac Montana SV6 and Relay
• Saturn Relay

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 Hub Assembly

• Eliminates wheel bearing noise caused by wear or damage
• Resolves wheel vibration and wobble due to hub misalignment
• Prevents premature brake rotor wear by maintaining proper brake pilot alignment
• Restores secure wheel mounting with correct flange bolt hole and stud configuration
• Improves overall driveline stability in non-driven wheel positions

Installation Notes and Tips

• Verify vehicle compatibility with the Timken HA590116 part number before installation
• Ensure all mounting surfaces are clean and free of debris for proper fitment
• Torque flange bolts and wheel studs to manufacturer specifications to avoid premature wear
• Inspect related components such as brake rotors and calipers during installation
• Use appropriate tools to avoid damage to the hub assembly during installation

Quality Assurance and Warranty

Timken manufactures the HA590116 wheel bearing and hub assembly to meet or exceed OEM standards for durability and performance. Each unit undergoes rigorous quality control to ensure precise dimensions and reliable operation. While specific warranty details may vary, Timken typically offers coverage against defects in materials and workmanship, providing confidence in the product's longevity and function.