Timken 512223 Wheel Bearing and Hub Assembly - Rear

Timken Rear Wheel Bearing Hub Assembly

The Timken 512223 wheel bearing and hub assembly is built for rear applications on select Cadillac CTS and Cadillac STS models. It combines OE-developed testing, precision bearing construction, and integrated ABS sensing to support smooth wheel rotation, stable braking response, and reduced noise and vibration.

Key Features

• Fits rear wheel positions on 2003-2007 Cadillac CTS and 2005-2011 Cadillac STS, including STS models with non-Brembo brakes
• Driven hub design with 30 splines
• 5 wheel studs and 3 flange bolt holes for direct hub mounting
• Low runout construction helps reduce noise and vibration
• Premium seals help protect against contamination and support seal life
• Precision-profile bearings with enhanced surface finishes for load capacity and bearing life
• 100% tested ABS sensor monitors wheel speed for anti-lock braking systems
• Cross-reference: SKF BR930081 for the same application

Detailed Description

Timken 512223 is a rear wheel bearing and hub assembly engineered for select Cadillac CTS and Cadillac STS vehicles. The hub uses a 115.00 mm bolt circle diameter, 145.50 mm flange diameter, 42.18 mm flange offset, 70.10 mm wheel pilot diameter, and 91.42 mm hub pilot diameter to match the specified application. Timken’s OE-developed test process guides the design, materials, and manufacturing steps used in the assembly, helping maintain consistent performance in daily driving conditions. The bearing package uses uniform internal geometry and refined surface finishes to support efficient operation, while the integrated ABS sensor provides wheel-speed input for anti-lock braking systems. This part number, 512223, is a direct-fit option for rear hub service on Cadillac CTS and Cadillac STS models within the listed years.

What This Part Helps Address

• Wheel bearing noise from worn rear hub components
• Vibration felt through the chassis or seat at speed
• Loose or inconsistent rear wheel support
• ABS warning concerns related to wheel-speed signal loss
• Braking instability caused by excessive hub runout

Installation Notes and Tips

Confirm rear fitment by year, model, and brake configuration before installation. This assembly is listed for 2005-2011 Cadillac STS rear applications with non-Brembo brakes and 2003-2007 Cadillac CTS rear applications. Inspect the mating surfaces, axle splines, and sensor connection points before mounting the new hub. Verify torque specifications and wheel-speed system operation after installation. Part number 512223 should be matched to the vehicle’s rear hub specification before service begins.

Quality Assurance

Timken uses OE-developed testing and controlled manufacturing processes for its hub bearing assemblies. The brand’s construction approach focuses on bearing geometry, sealing, and ABS sensor validation to support consistent performance in the specified Cadillac CTS and Cadillac STS applications.