Join Date: Feb 2011
Location: Colorado Springs, CO
I do Auto Parts for a career.
We refer to that as a 'blow out clip', referring to how it can direct the window, preventing it from blowing away from the body, and guiding the glass in. Back when it was common for cars to have non-frame doors, and horrid body fits, it was more of a big deal.
It appears to me to be a part of the upper weatherstrip, and not a separate part.
If you can somehow separate it from a strip and install it on yours, do it
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