Hi Marcus. Well, I have my door panels off so I am the perfect guy to ask, right? Wrong. I do not see that part anywhere! I have two rubber tipped brackets at the bottom of the glass that resemble the rubber tipped end of you piece. Then in the front, I have one stopper screw connected to the window regulator. There is no removable piece there... My doors could be anomalies (as early ones)? Not sure.