Timken HA590307 Wheel Bearing and Hub Assembly - Front

Timken HA590307 Wheel Bearing and Hub Assembly Overview

The Timken HA590307 wheel bearing and hub assembly is engineered for reliable performance in Chevrolet Astro and GMC Safari vehicles. Designed as a non-driven hub, this assembly ensures precise fitment and durability for your driveline and axle needs.

• Flange bolt hole quantity: 3 for secure mounting
• Wheel pilot diameter: 3.085 inches (78.37 mm)
• Brake pilot diameter: 3.228 inches (82.00 mm)
• Wheel stud quantity: 6 for enhanced wheel attachment
• Hub pilot diameter: 3.909 inches (99.30 mm)
• Flange offset: 1.945 inches (49.42 mm)
• Flange diameter: 7.087 inches (180.00 mm)
• Bolt circle diameter: 5.500 inches (139.70 mm)
• Drive type: Non-driven hub assembly

Detailed Product Description

The Timken HA590307 is a wheel bearing and hub assembly specifically designed for the Chevrolet Astro and GMC Safari models. This non-driven hub assembly features a flange with three bolt holes and six wheel studs, providing a secure and stable connection to the vehicle’s wheel and brake components. The precise wheel pilot diameter of 3.085 inches and brake pilot diameter of 3.228 inches ensure proper alignment and fitment, reducing vibration and wear. The hub pilot diameter of 3.909 inches supports the hub’s centering on the axle, while the flange offset of 1.945 inches maintains correct positioning relative to the vehicle’s suspension geometry. The flange diameter of 7.087 inches and bolt circle diameter of 5.500 inches are engineered to match factory specifications for these GM models.

Compatible Vehicles and Applications

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

• Chevrolet Astro
• GMC Safari

It is designed to replace worn or damaged wheel bearing and hub assemblies on these models, restoring proper wheel rotation and brake system alignment.

Common Issues Addressed by Timken HA590307

• Wheel bearing noise or roughness during rotation
• Excessive wheel play or looseness
• Uneven brake rotor wear due to misalignment
• Vibration or wobbling at higher speeds
• Failure of original hub assembly components

Installation Notes and Tips

• Ensure vehicle is securely lifted and supported before removal
• Clean mounting surfaces to remove rust and debris
• Verify bolt hole alignment and torque flange bolts to manufacturer specifications
• Check wheel stud condition and replace if damaged
• Use proper tools to avoid damage to the hub assembly during installation

Quality Assurance and Warranty

Timken wheel bearing and hub assemblies are manufactured to meet or exceed OEM standards for durability and performance. The HA590307 part number undergoes rigorous quality control to ensure precise fit and long service life. Timken typically offers a limited warranty covering defects in materials and workmanship; please refer to Timken’s official warranty documentation for specific terms.