!@#% little plastic piece!

[Hairball]

Well, something busted. I'm not exactly sure what it's called, but if you look at the rear A-arms of your car, there is the metal part where the wheels slide onto, then the bearings in the arm, then the knuckles, then whatever the thingie the knuckle slides into. Well, the thingie that the knuckle slides into has one of the tabs broken off, so it sucks. If someone could tell me what EXACTLY the piece is called, it'd be much appreciated. I looked at CJ's list and didn't find what I think it would be called. Also, if an upgrade replaces this piece, or if there is a newer, better version (metal maybe?), please let me know.

Thanks in advance (maybe?)