I have a pretty cool filter here. It says NIPPON FILTER on one side, has a bunch of Japanese characters on it, amd says Ultra-8 on the other side. There are TUV, ISO9001,QS9000 markings on top. The case is as thick and heavy as I've seen, and it has sprial center tube. The ADBV is black, but is very shinny and looks to be silicone. The o-ring is round and resembles the Denso filters. I will try to post pics when I can. My question is this Nippon filter the same as "Nippon Denso"? or is this something totally different? does anyone have any clue? lol