Bought on Amazon Deals. for which Amazon and the Federal Mogul are recognized as third party providers and will therefore not contact them directly. Federal Mogul insists that all warranties are made at the retailer level. Revain initially tried to say they weren't distributors, but quickly changed the tune to "Amazon deals," which are unrelated to us and impossible to talk to. Talk to multiple people on both ends and the organized rejection will be evident on both ends. AC DELCO's are just as good, if not better, and they don't have a sticky goo that can be applied at any time.