Timken HA590186 Wheel Bearing and Hub Assembly - Front or Rear

Timken HA590186 Wheel Bearing and Hub Assembly Overview

The Timken HA590186 wheel bearing and hub assembly is engineered for reliable driveline performance in Pontiac Sky and Saturn Solstice vehicles. Designed to meet precise specifications, this assembly ensures proper fit and function for your vehicle's driven axle system.

• 30 spline quantity for secure axle engagement
• 3 flange bolt holes for stable mounting
• 5 wheel studs for reliable wheel attachment
• Wheel pilot diameter of 2.560 inches (65.00 mm) for accurate wheel centering
• Brake pilot diameter of 2.756 inches (70.00 mm) to support brake component alignment
• Hub pilot diameter of 3.543 inches (90.00 mm) for precise hub fitment
• Flange offset of 1.535 inches (39.00 mm) to maintain correct wheel positioning
• Flange diameter of 5.394 inches (137.00 mm) and bolt circle diameter of 4.331 inches (110.00 mm) for compatibility with OEM specifications

Detailed Product Description

The Timken HA590186 is a wheel bearing and hub assembly designed specifically for the driven axle of select Pontiac Sky and Saturn Solstice models. This assembly features a 30-spline axle interface, ensuring a secure connection to the drivetrain. The flange includes 3 bolt holes and 5 wheel studs, providing a robust mounting platform for wheels and brake components. The wheel pilot diameter of 2.560 inches (65.00 mm) and brake pilot diameter of 2.756 inches (70.00 mm) help maintain proper alignment of wheels and brakes, reducing vibration and wear. Additionally, the hub pilot diameter of 3.543 inches (90.00 mm) ensures the hub seats correctly on the axle, contributing to overall driveline stability. The flange offset and diameter are engineered to match factory specifications, preserving the vehicle’s handling characteristics.

Common Applications and Problem Solving

• Replacement for worn or damaged wheel bearing and hub assemblies on Pontiac Sky and Saturn Solstice
• Eliminates wheel vibration caused by bearing wear or hub misalignment
• Resolves noise issues such as humming or grinding from the wheel area
• Restores proper wheel and brake component alignment
• Addresses looseness or play in the wheel hub assembly

Installation Notes and Tips

When installing the Timken HA590186, ensure the vehicle is securely lifted and supported. Remove the wheel and brake components carefully to access the hub assembly. Verify the spline count and pilot diameters match the vehicle specifications before installation. Use proper torque specifications on flange bolts and wheel studs to avoid premature wear. It is recommended to inspect related components such as axle shafts and brake rotors during installation for any signs of damage or wear.

Quality Assurance and Warranty

Timken manufactures the HA590186 wheel bearing and hub assembly to meet strict quality standards, ensuring durability and performance. This part is engineered to OEM specifications for fit and function. While specific warranty details may vary, Timken typically offers coverage against defects in materials and workmanship. Consult the product documentation or Timken directly for warranty terms applicable to this part number.