It's the rear sway bar end link that keeps the rear suspension stable and equal when the car gets on the corners. I would leave it if it's not clunking or causing handling issues.
AH! Thanks FD7683! I have a feeling I have to replace these since I'm pretty sure the passenger side is missingIt's the rear sway bar end link that keeps the rear suspension stable and equal when the car gets on the corners. I would leave it if it's not clunking or causing handling issues.