Timken HA590491 Wheel Bearing and Hub Assembly - Front or Rear

Timken HA590491 Wheel Bearing and Hub Assembly Overview

The Timken HA590491 wheel bearing and hub assembly is engineered for reliable driveline performance in select GM trucks and SUVs. Designed to meet the specific requirements of vehicles like the Chevrolet Silverado 1500 and GMC Sierra 1500, this assembly ensures proper fit and function for driven axles.

• 33 spline quantity for precise axle engagement
• 6 wheel studs for secure wheel mounting
• 3 flange bolt holes with a 5.5-inch bolt circle diameter
• Flange diameter of 7.045 inches and flange offset of 49.46 mm
• Multiple pilot diameters for wheel, brake, and hub alignment

Technical Specifications and Features

The HA590491 features a 33-spline driven design compatible with driven axles on various GM models. It includes 6 wheel studs to accommodate standard wheel mounting configurations. The flange diameter measures 178.95 mm (7.045 inches) with a flange offset of 49.46 mm (1.959 inches), ensuring proper wheel positioning and clearance. The bolt circle diameter is 139.7 mm (5.5 inches) with 3 flange bolt holes, providing secure attachment to the vehicle hub. Wheel pilot diameters of 78.38 mm (3.086 inches) and brake pilot diameters of 77.77 mm (3.062 inches) help maintain precise alignment for brake components and wheels. The hub pilot diameter is 99.31 mm (3.910 inches), supporting accurate hub centering.

Compatible Vehicles and Applications

This Timken wheel bearing and hub assembly is compatible with a range of GM trucks and SUVs, including:

• Cadillac Escalade and Escalade ESV
• Chevrolet Silverado 1500 and Silverado 1500 LD
• GMC Sierra 1500 and Sierra 1500 Limited
• Chevrolet Suburban 1500 and Tahoe
• Cadillac XTS
• GMC Yukon and Yukon XL

Common Issues Addressed by This Assembly

• Wheel bearing noise or roughness during driving
• Excessive wheel play or looseness
• Uneven or premature tire wear
• ABS sensor or brake component misalignment
• Vibration or wobbling at higher speeds

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Verify the spline count and pilot diameters match the vehicle specifications. Clean the mounting surfaces thoroughly to prevent contamination. Torque all flange bolts and wheel studs to manufacturer specifications. It is recommended to inspect related components such as axle shafts and brake parts during installation.

Quality Assurance and Warranty

Timken wheel bearing and hub assemblies are manufactured to meet OEM standards for durability and performance. The HA590491 part number undergoes rigorous quality control to ensure proper fit and function. While specific warranty details are not provided here, Timken products typically include coverage against defects in materials and workmanship.