Originally Posted by ss.slp.ls1

If you look closely, that's not your only problem, one of your plastic rivets is broken as well. When my oem opti (140K on the clock) when bad, it was a broken plastic rivet that was the culprit. When my two week old JEG's brand opti went bad, it was the rotor screws backing out that detached the rotor. Now with a new AC Delco installed, no problems thus far.