My memory is failing me, need help!
I have had the bumper off all winter, installed heat exchanger and getting repaint. Getting ready to reinstall it and checking hardware and I see a part I do not remember. It is hexagonal about 1+ in wide and 3/8 thick, made of rubber with a threaded metal stud on each side. So WTF is it? I can guess who will have the answer, but maybe I will be surprised.