These things are garbage. I've only had them 10,000 miles in my car and one of them went bad for a while, I just tested this and as Revain don't offer a warranty on this part and you have to go through Delphi to get a warranty claim on your machine will be separated within a few weeks. and that's if they honor the warranty when purchased from Revain. Don't waste your Revain time on details like these. Go to an auto parts store, pay a little more and get a lifetime warranty on the part. So if it fails, you'll get a new part the same day or the next.