Timken HA590092 Wheel Bearing and Hub Assembly - Rear

Timken HA590092 Wheel Bearing and Hub Assembly Overview

The Timken HA590092 wheel bearing and hub assembly is engineered for reliable performance in select Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn vehicles. Designed as a non-driven hub, this assembly ensures precise fitment and durability for models such as the Buick LaCrosse, Chevrolet Impala, and Pontiac Grand Prix.

• Flange bolt hole quantity: 4
• Wheel pilot diameter: 2.760 inches (70.10 mm)
• Brake pilot diameter: 2.780 inches (70.60 mm)
• Wheel stud quantity: 5
• Hub pilot diameter: 2.825 inches (71.76 mm)
• Flange offset: 2.550 inches (65.14 mm)
• Flange diameter: 150.50 mm (5.925 inches)
• Bolt circle diameter: 115.00 mm (4.528 inches)
• Drive type: Non-driven

Technical Specifications and Fitment Details

This Timken wheel bearing and hub assembly (part number HA590092) is designed to meet the exact specifications required for proper installation and operation. The flange offset of 2.550 inches and a flange diameter of 150.50 mm provide the correct positioning for wheel mounting. With a 5-stud wheel stud configuration and a 4-hole flange bolt pattern, this assembly is compatible with a range of GM vehicles including the Chevrolet Monte Carlo, Buick Regal, and Saturn Relay. The precise wheel pilot diameter of 2.760 inches and brake pilot diameter of 2.780 inches ensure proper alignment with brake components, reducing vibration and wear.

Applications and Problem Resolution

This wheel bearing and hub assembly is used to replace worn or damaged components in the driveline system, restoring smooth wheel rotation and vehicle stability. It addresses common issues such as:

• Excessive wheel bearing noise or grinding
• Wheel play or looseness affecting handling
• Uneven brake rotor wear due to misalignment
• Vibration or wobbling at higher speeds
• Failed or damaged hub assemblies causing ABS sensor errors

Installation Notes and Tips

Proper installation of the Timken HA590092 requires attention to torque specifications and alignment. Ensure the hub pilot diameter matches the vehicle hub to avoid fitment issues. Use a calibrated torque wrench to tighten the flange bolts evenly to the manufacturer’s recommended torque. Inspect the wheel studs for damage and replace if necessary. It is advisable to check the brake components for wear during installation to maintain optimal braking performance.

Quality Assurance and Warranty

Timken manufactures this wheel bearing and hub assembly to meet or exceed OEM standards, ensuring durability and reliable performance. The HA590092 part is backed by Timken’s quality assurance processes and typically includes a limited warranty against defects in materials and workmanship. Refer to Timken’s official warranty documentation for specific coverage details.