My wife backed our 07 Q7 into a hitch ball mount of another car and punched a hole in our lower rear bumper cover. I have found a used bumper cover painted in the correct color except it has park sensor holes and mine does not. I would like to retrofit aftermarket park sensors into the bumper, but I need to know the cut out diameter of the holes in the factory bumper to make sure I can get an aftermarket sensor to fill the hole. Anybody that could measure theirs and report back would be much appreciated.
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