Original factory grommet for the head temperature sensor lead that seals the air from leaking out of the cylinder cover. installs under the passenger right side intake tube in the cylinder cover
Known as: rubber sleeve
No one ever knows about this part so never changes it. the result is a clogged fuel tank and a straining/failing fuel pump. easily replaced with the gas tank removed, it is also a great time to replace the sending unit and filler neck gaskets, as well as the lower fuel lines.
Don’t be without this item when changing the oil. Too many replace the filter but don’t clean the strainer, resulting in dirtier oil long before its time.
Small-hole bottom of the gas tank strainer nuts that hold in the fuel delivery nipples. Long corroded away, these are exact duplicates of the no longer available factory parts.