Subject line says it all. Local availability is spotty to non-existent. I do like the Mobil 1 M1-204 filter. The bypass valve is on the threaded end and the ADBV is orange like the Wix 51085. It may be overpriced but it is what I am looking for and the extra $ over six months is really not too bothersome. So can anybody recommend anywhere on line that has the M1-204. AutoZone is 12 bucks but they are usually out. Thanks for any advice.