075949875 - This stainless steel washer goes immediatly under the original style oil filters on bevel drive 860 & 900 twins.
The problem is that they go missing because they stick to the oil filter and get tossed in the garbage. This has always been something I have felt was a reason so many negative things have been said about bevel drive lower ends..... No washer - no filtration. Big end go bang.
Also, to use the kawa filter that was commonly available years ago, you needed to remove this washer to fit it in the cover. Now that correct Athena filters are available, some people will need this washer so they actually work since theirs is long gone.