**Located in rear wheel carrier, comes with snap rings** This ball joint sits in the rear wheel carrier and acts as a pivot point for the lower control arm in relation to the wheel carrier. After thousands of miles of driving and exposure to the elements it is not uncommon for the rubber to fatigue and for this ball joint to fail. Most commonly failure of the suspension component will cause the following problems: - Rear swerve/tramline during turns/slaloms. - Rear vibration/shimmy. - Rear squeaks, often heard over bumps and when entering and exiting car. - Rear tire inner tread wear and cupping.