Timken HA590077 Wheel Bearing and Hub Assembly - Front

Timken Front Wheel Hub Assembly

The Timken HA590077 wheel bearing and hub assembly is built for front-end service on select Cadillac applications, including CTS, SRX, and STS models. It combines OE-developed validation, low runout, and precision bearing construction to support smoother operation, reduced noise, and stable braking performance.

• Front wheel bearing and hub assembly for non-driven applications
• 6 wheel studs with a 4.528 in. / 115.00 mm bolt circle diameter
• Wheel pilot diameter: 2.760 in. / 70.10 mm
• Brake pilot diameter: 2.780 in. / 70.6 mm
• Hub pilot diameter: 3.599 in. / 91.42 mm
• Flange diameter: 5.728 in. / 145.50 mm
• Flange offset: 1.656 in. / 42.06 mm
• ABS sensor tested for wheel-speed monitoring in Anti-lock Braking Systems

Fitment and Application Details

Compatible with front-wheel service on 2004-2007 Cadillac CTS, 2004-2009 Cadillac SRX, and 2008-2011 Cadillac STS. For 2005-2007 Cadillac STS, this application is for the front position with Performance Package - Heavy Duty; 6 Stud. For 2008-2011 Cadillac STS, this application is for the front position with Brembo Brakes.

Timken HA590077 uses precision internal geometry and enhanced surface finishes to support load capacity and bearing life. The sealed design includes reinforced sealing features that help maintain contamination exclusion and consistent sealing performance. This makes the assembly a direct-fit service part for Cadillac CTS front hub replacement, Cadillac SRX front wheel bearing service, and Cadillac STS front hub assembly replacement.

Common Repair Symptoms

• Wheel bearing noise from the front of the vehicle
• Excessive wheel play or looseness at the hub
• ABS warning light related to wheel-speed signal issues
• Brake pulsation or vibration tied to hub runout
• Uneven braking feel during front-end service

Installation Notes

Verify rotor, brake, and wheel pilot dimensions before installation, especially on Cadillac STS models with Brembo Brakes or the Performance Package - Heavy Duty; 6 Stud configuration. Confirm the front position and non-driven hub specification match the vehicle before service. Clean the mounting surface thoroughly and inspect adjacent suspension and brake components for wear before installing the new hub assembly.

Quality Assurance

Timken validates hub bearing assemblies with OE-developed testing focused on design, materials, and manufacturing process control. The HA590077 is built with precision-profile bearings, tested ABS sensing, and sealing features intended to support consistent performance in daily driving and braking service. This part cross-references MOOG 513197 and SKF BR930313 for the same application.