DB is china import stuff. For the most part they are pretty good, but you do get a few junk ones. I will say I have dealt with DB in the past, and will buy from them again in the future. They have gone above and beyond a few times now for me when a problem arose, and that is all you can ask of a company. ARCO does make the GOOD stuff though, and there is a reason it costs more, because it is worth it. ARCO is going to be on par with a mexico reman part or the like whereas ARCO will be as good or better than the OEM parts were.