Timken HA590074 Wheel Bearing and Hub Assembly - Rear

Timken Rear Wheel Bearing Hub Assembly

Timken HA590074 is a rear wheel bearing and hub assembly for select Chevrolet, Pontiac, and Buick applications. It is built with OE-developed testing and controlled manufacturing processes to support consistent fit, smooth operation, and dependable wheel-speed signal performance.

Key Features

• Rear, non-driven wheel bearing and hub assembly
• 5 wheel studs with a 115 mm bolt circle diameter
• Wheel pilot diameter: 70.1 mm; hub pilot diameter: 71.76 mm
• Brake pilot diameter: 70.6 mm
• Flange diameter: 150.5 mm with 64.76 mm flange offset
• Premium bearing design with precision profiles and uniform internal geometry
• ABS sensor is 100% tested for wheel-speed monitoring
• Timken part number HA590074

Detailed Description

Built for rear axle service, Timken HA590074 is a direct-fit wheel bearing and hub assembly for vehicles such as the Chevrolet Impala, Pontiac Grand Prix, Chevrolet Monte Carlo, Buick Allure, Buick Century, Buick LaCrosse, Pontiac Aztek, and Buick Regal. The assembly uses low-runout construction to help reduce noise and vibration while supporting stable braking feel. Timken also uses premium seals with reinforced construction and contamination control features to help maintain sealing performance over time. The bearing design focuses on load capacity, bearing life, and efficient operation, while the integrated ABS sensor is tested to monitor wheel speed for anti-lock braking systems. If you are replacing a worn rear hub on a Chevrolet Impala or Pontiac Grand Prix, HA590074 provides the dimensional and sensor details needed for a proper service match.

Common Problems This Part Can Address

• Rear wheel noise from a worn hub bearing
• Vibration or runout at the rear wheel
• ABS warning light caused by wheel-speed sensor issues
• Loose or rough-feeling rear hub operation
• Brake pulsation or inconsistent braking feel related to hub wear

Installation Notes and Tips

Verify rear fitment by year, make, and model before installation. Confirm the 5-lug, 115 mm bolt circle and the listed pilot diameters match the original hub. Inspect the mounting surface, axle area, and brake components for wear or corrosion before installing the new assembly. Because this is a rear non-driven hub assembly, it should be matched to the correct rear position only. Timken HA590074 is listed for 2000-2008 Chevrolet Impala rear, 2003-2008 Pontiac Grand Prix rear, 2003-2007 Chevrolet Monte Carlo rear, 2005 Buick Allure rear, 2005 and 2003 Buick Century rear, 2005 Buick LaCrosse rear, 2003-2005 Pontiac Aztek rear, and 2003-2004 Buick Regal rear.

Quality Assurance

Timken manufactures hub bearing assemblies using OE-developed testing and controlled design, material, and process standards. This part cross-references SKF BR930026 for the same application. Part number HA590074 is engineered to deliver consistent wheel-bearing performance, sealing integrity, and ABS sensor function across the listed rear-fit applications.