Reading my 1000 Owners manual is says to replace the oil filter housing cover O ring at each oil change. I have the filters but no O rings in the packages. Hey Honda why not put them in the package with the filter if you want them changed each service? I have been searching for the part numbers and can't find them. I have everything I need for my 1st service but the O rings. I am sure I could re-use the old ones but you know Murphy's law seams to raise it's head for me often.