Thanks for the response...I really appreciate the help. It is for an '82 300d-turbo. I'm having a little trouble finding that part number online. Is there anything special about that particular o-ring besides the size? If not, would anybody happen to know the correct size? Thanks again!
After seeing how brittle the O-rings were that I replaced on the pipe that is part of the oil filter housing cover, I'd like to have one on hand for this bolt when I pull it out.