A woman sold me a set of o rings for the EATC on my Mercury Grand Marquis. There were a bunch of them in a bag and none of them fit. I then went back to exchange them for the proper o rings and they would not give me my money back for the original o rings since the bag was opened. Not sure how I was supposed to see if any of the o rings were right without opening the bag. Also why would this woman sell me a bag of useless o rings when she was informed of the year make and model of my car ? I will now be filing a complaint with the better business bureau.