Timken HA590074 Wheel Bearing and Hub Assembly - Rear

Timken HA590074 Wheel Bearing and Hub Assembly Overview

The Timken HA590074 wheel bearing and hub assembly is engineered for reliable performance in select Buick, Chevrolet, and Pontiac vehicles. Designed as a non-driven hub, this assembly ensures precise fitment and durability for models such as the Buick LaCrosse and Chevrolet Impala.

• Wheel pilot diameter: 2.76 inches (70.1 mm)
• Brake pilot diameter: 2.78 inches (70.6 mm)
• Hub pilot diameter: 2.825 inches (71.76 mm)
• Flange offset: 2.55 inches (64.76 mm)
• Flange diameter: 5.925 inches (150.5 mm)
• Bolt circle diameter: 4.528 inches (115 mm)
• Wheel stud quantity: 5
• Drive type: Non-driven

Technical Details and Specifications

The HA590074 assembly features precise pilot diameters for the wheel, brake, and hub, ensuring accurate alignment and smooth rotation. The flange offset and diameter are designed to match factory specifications, providing proper clearance and fitment. With a 5-stud wheel configuration and a bolt circle diameter of 115 mm, this hub assembly is compatible with various Buick, Chevrolet, and Pontiac models including the Chevrolet Monte Carlo and Pontiac Grand Prix.

Compatible Vehicles and Applications

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

• Buick Allure, LaCrosse, Regal
• Chevrolet Aztek, Impala, Monte Carlo
• Pontiac Century, Grand Prix

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 Timken HA590074

• Eliminates wheel bearing noise and vibration
• Resolves wheel hub looseness or play
• Prevents premature bearing wear due to improper fit
• Restores proper wheel alignment and rotation
• Addresses ABS sensor malfunctions related to hub assembly

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Clean the mounting surface thoroughly to remove rust and debris. Verify the wheel pilot, brake pilot, and hub pilot diameters match the vehicle specifications. Torque the wheel studs and hub bolts to manufacturer-recommended values. It is advisable to inspect related components such as wheel studs and brake rotors during installation.

Quality Assurance and Warranty

Timken wheel bearing and hub assemblies are manufactured to meet or exceed OEM standards. The HA590074 part number undergoes rigorous testing for durability and performance. While specific warranty details may vary, Timken typically offers coverage against defects in materials and workmanship. Refer to Timken’s official documentation for complete warranty information.