Timken HA590366 Wheel Bearing and Hub Assembly - Rear

Timken HA590366 Rear Hub Assembly

Timken HA590366 is a rear wheel bearing and hub assembly for the 2008-2015 Scion xB. It is built for non-driven rear applications and uses OE-developed testing standards to support consistent fit, smooth rotation, and stable braking performance.

For shoppers searching for a rear wheel bearing and hub assembly for Scion xB, Timken HA590366 combines precision bearing geometry with sealing features that help reduce noise, vibration, and contamination exposure.

Key Features

• Fits 2008-2015 Scion xB, rear
• Non-driven hub assembly for rear axle service
• 5 wheel studs with a 4-bolt flange pattern
• 4.527 in. bolt circle diameter and 5.984 in. flange diameter
• Wheel pilot diameter: 2.362 in. / 60.00 mm
• Brake pilot diameter: 2.440 in. / 61.98 mm
• Hub pilot diameter: 2.911 in. / 73.96 mm
• ABS sensor tested for wheel-speed monitoring in anti-lock braking systems

Detailed Description

Timken HA590366 is a rear wheel bearing and hub assembly engineered for the 2008-2015 Scion xB. Timken applies OE-developed testing to the design, materials, and manufacturing process, helping maintain consistent performance in everyday driving. The assembly uses low-runout construction to reduce noise and vibration while supporting braking feel and wheel-end stability.

The bearing package features precision profiles, uniform internal geometry, and enhanced surface finishes to improve load-carrying capacity and bearing life. Premium sealing components are built with a reinforced outer case, ribbed rubber inner diameter, internal contamination exclusion, and vent holes to help protect the bearing during installation and in service. The ABS sensor is fully tested to monitor wheel speed for anti-lock braking systems.

This part cross-references MOOG Hub Assemblies 512418 and SKF BR930750 for the same application.

What It Helps Fix

• Rear wheel bearing noise on a Scion xB
• Vibration or roughness from the rear hub area
• ABS wheel-speed signal issues tied to the rear hub assembly
• Brake performance concerns caused by hub runout
• Contamination-related bearing wear at the rear wheel end

Installation Notes and Tips

Verify rear fitment before installation on the 2008-2015 Scion xB. Inspect the knuckle, axle area, and mating surfaces for wear, corrosion, or damage before mounting the new hub assembly. Confirm the ABS connector and sensor routing match the vehicle configuration, and torque all fasteners to the vehicle manufacturer’s specifications.

Quality Assurance

Timken uses OE-developed test procedures to control hub bearing design, materials, and manufacturing consistency. The result is a rear hub assembly built around precision bearing geometry, controlled runout, and tested ABS sensing for dependable service on the Scion xB.