Installed my NAPA remote oil filter kit yesterday PM. Went well till it was time to spin on the new filter. The 12 mm diameter nipple supplied is too short for the filter a quick search on google is not encouraging on a weekend for off the shelf metric nipples. My next step is to take the hoising to find filter that will match. I have faith in this Kobota stock filter, some auto zone unit not so much. Tom Evans SV Tappan Zee San Diego