The OEM oil filters have long been out of production,the Emgo replacements have a tendency to leak,and filter prices aren't getting any cheaper.On occasion you can locate a factory oil filter adapter kit.I decided long ago to come up with my own system.It makes for 10 minute oil changes too! It uses an industrial stainless steel 25 micron filter.Flowezy part # Y2-SS-1/4-25-F3 [flowezyfilters.com] Jim