Timken HA590086 Wheel Bearing and Hub Assembly - Front

Timken HA590086 Front Hub Assembly

Timken HA590086 is a front wheel bearing and hub assembly built for driven applications that need stable wheel support, accurate ABS signal monitoring, and consistent braking feel. It is a direct-fit replacement for select Chevrolet, Pontiac, and Saturn models, including the Chevrolet HHR, Chevrolet Cobalt, Pontiac G5, and Saturn Ion.

OE-developed testing is used to control the design, materials, and manufacturing process of this hub assembly. The result is a service part focused on low runout, reduced noise and vibration, and dependable wheel-speed sensing for ABS-equipped vehicles.

Key Features

• Front wheel bearing and hub assembly for driven applications
• 33-spline design with 5 wheel studs
• 3 flange bolt holes and 4.331 in. bolt circle diameter
• Hub pilot diameter: 85.00 mm (3.346 in.)
• Wheel pilot diameter: 64.97 mm (2.558 in.)
• Brake pilot diameter: 65.45 mm (2.577 in.)
• Flange diameter: 137.00 mm (5.394 in.)
• Flange offset: 38.95 mm (1.533 in.)
• ABS sensor tested for wheel-speed monitoring
• Premium seals and precision bearing surfaces for long service life

Detailed Description

Timken HA590086 is engineered as a front hub bearing assembly for vehicles that rely on a driven front hub design. It uses precision bearing profiles, uniform internal geometry, and enhanced surface finishes to support load capacity and smooth rotation. Timken also incorporates premium sealing features to help protect the bearing from contamination and installation damage, while supporting positive sealing over time. For drivers searching for a front wheel bearing and hub assembly for a 2006-2011 Chevrolet HHR, 2005-2010 Chevrolet Cobalt Sport Suspension, 2007-2009 Pontiac G5 with 16 in. or 17 in. wheels, or 2004-2007 Saturn Ion, this part number provides a direct replacement option. Timken HA590086 cross-references SKF BR930433 for the same application.

What It Helps Fix

• Wheel bearing noise from the front hub area
• Excessive wheel vibration or runout
• ABS warning light caused by wheel-speed sensor issues
• Uneven braking feel related to hub wear
• Loose or worn front hub support

Installation Notes and Tips

Verify spline count, bolt circle diameter, flange offset, and pilot dimensions before installation. This assembly is for the front position only and is listed for driven applications. Confirm ABS connector and sensor routing match the original setup on the vehicle before service. For fitment, use the exact application listing: Fits 2006-2011 Chevrolet HHR, front; Fits 2005-2010 Chevrolet Cobalt, front, Sport Suspension; Fits 2007-2009 Pontiac G5, front, 16 in., 17 in. Wheels; Fits 2004-2007 Saturn Ion, front.

Quality Assurance

Timken uses OE-developed testing and controlled manufacturing processes to support consistent hub assembly performance. The bearing design, sealing system, and ABS sensor testing are all focused on durability, wheel-speed accuracy, and reliable operation in service.