Timken HA590158 Wheel Bearing and Hub Assembly - Rear

Timken HA590158 Wheel Bearing and Hub Assembly Overview

The Timken HA590158 wheel bearing and hub assembly is engineered for reliable performance in select Buick, Chevrolet, and Pontiac vehicles. Designed specifically for non-driven applications, this assembly ensures proper fit and function for models like the Montana, Terraza, and Uplander.

• Compatible with Buick Montana, Chevrolet Terraza, and Pontiac Uplander
• Non-driven wheel bearing and hub assembly
• 6 wheel studs for secure wheel mounting
• 3 flange bolt holes with a 114.34 mm (4.502 in) bolt circle diameter
• Wheel pilot diameter of 70.02 mm (2.757 in) and brake pilot diameter of 70.54 mm (2.777 in)
• Hub pilot diameter of 91.28 mm (3.594 in) for precise alignment
• Flange diameter of 145.42 mm (5.725 in) and flange offset of 42.00 mm (1.654 in)

Detailed Specifications and Features

This Timken HA590158 assembly features a 6-stud wheel configuration, providing a secure and stable mounting surface for wheels on compatible vehicles. The flange includes 3 bolt holes arranged on a 114.34 mm bolt circle diameter, ensuring proper attachment to the vehicle hub. The wheel pilot diameter measures 70.02 mm, while the brake pilot diameter is slightly larger at 70.54 mm, allowing for accurate positioning of the brake components. The hub pilot diameter of 91.28 mm supports precise hub alignment, reducing vibration and wear. With a flange diameter of 145.42 mm and an offset of 42.00 mm, this assembly maintains correct wheel positioning relative to the suspension and brake system.

Applications and Problem Resolution

• Replacement for worn or damaged wheel bearing and hub assemblies on Buick Montana, Chevrolet Terraza, and Pontiac Uplander
• Eliminates wheel noise caused by bearing wear
• Resolves wheel vibration and wobble issues
• Restores proper wheel alignment and brake component fitment
• Prevents premature tire wear due to hub misalignment

Installation Notes and Tips

When installing the Timken HA590158, ensure the vehicle is securely lifted and supported. Remove the existing hub assembly carefully to avoid damage to surrounding components. Clean the mounting surface thoroughly before installation to ensure proper fit. Torque all flange bolts and wheel studs to manufacturer specifications. Verify the flange offset and pilot diameters match the vehicle requirements to maintain correct wheel and brake alignment.

Quality Assurance and Warranty

Timken manufactures the HA590158 wheel bearing and hub assembly to meet strict quality standards, ensuring durability and reliable performance. This part is backed by Timken's warranty coverage, which protects against defects in materials and workmanship under normal use. Always refer to Timken's warranty documentation for specific terms and conditions.