Honda CB Tachometer Block Off Plug
Electronic tachometers are all the rage these days. What is not, is having a hole in the top of your engine that spits oil all over your cases. This solves you problem. It plugs that hole that remove the tach cable leaves. It is machined out of 6061 billet aluminum. It includes and o-ring to block oil from leaking out all over your engine. Not only is it functional, but it is a nice cosmetic upgrade as well.