Timken HA590070 Wheel Bearing and Hub Assembly - Front

Timken HA590070 Wheel Bearing and Hub Assembly Overview

The Timken HA590070 wheel bearing and hub assembly is engineered for reliable driveline performance in select Chevrolet, Pontiac, and Saturn vehicles. Designed to meet precise specifications, this assembly ensures proper fit and function for models including the Chevrolet Cobalt, Malibu, HHR, Pontiac G6, and Saturn Aura.

• 30 spline quantity for secure drivetrain connection
• Wheel pilot diameter of 2.558 inches (64.97 mm) for accurate wheel alignment
• Brake pilot diameter of 2.577 inches (65.45 mm) to support brake component fitment
• 5 wheel studs for stable wheel mounting
• Hub pilot diameter of 3.543 inches (90.00 mm) ensuring proper hub centering
• Driven type assembly designed for powered axle applications
• Flange offset of 1.535 inches (39.00 mm) and flange diameter of 5.394 inches (137.00 mm) for correct positioning
• Bolt circle diameter of 4.331 inches (110.00 mm) matching factory specifications

Detailed Product Description

The Timken HA590070 wheel bearing and hub assembly is a critical component in the driveline and axles category, specifically designed to replace worn or damaged wheel hubs on compatible vehicles. With a spline quantity of 30, this assembly provides a secure connection to the axle shaft, ensuring smooth power transfer. The precise wheel pilot and brake pilot diameters maintain proper alignment of the wheel and braking components, reducing vibration and wear. Featuring five wheel studs and a hub pilot diameter of 3.543 inches, this assembly supports stable wheel mounting and centering. The flange offset and diameter are engineered to match factory dimensions, ensuring compatibility with the vehicle’s suspension and brake systems.

Compatible Vehicles and Applications

This Timken HA590070 assembly is compatible with the following makes and models:

• Chevrolet Cobalt
• Chevrolet Malibu
• Chevrolet HHR
• Pontiac G6
• Saturn Aura

It is designed for driven axle applications, making it suitable for front-wheel-drive configurations on these vehicles.

Common Issues Addressed by This Assembly

• Eliminates wheel bearing noise caused by wear or damage
• Resolves wheel vibration and wobble issues
• Restores proper wheel alignment and centering
• Prevents premature brake component wear due to misalignment
• Ensures secure wheel mounting with correct stud count and bolt pattern

Installation Notes and Tips

• Verify vehicle compatibility with Chevrolet Cobalt, Malibu, HHR, Pontiac G6, or Saturn Aura before installation
• Ensure the axle shaft spline count matches the 30 spline quantity of this assembly
• Use proper torque specifications for wheel studs and hub mounting bolts
• Inspect related components such as axle shafts and brake rotors for wear during installation
• Professional installation is recommended to maintain driveline integrity and safety

Quality Assurance and Warranty

Timken manufactures the HA590070 wheel bearing and hub assembly to meet or exceed OEM standards for durability and performance. This assembly undergoes rigorous quality control to ensure precise fit and reliable operation. While specific warranty details may vary, Timken products typically include a limited warranty against defects in materials and workmanship. Consult product documentation or Timken directly for exact warranty terms.