Part number:
584.31.032.000 OEM description: PLASTIC RING. This is intended to fit tightly on the needle in order to prevent spinning. Fit the clip to the position of choice, slide the spacer up the needle as far as is it will go easily, place the blunt end of the needle on a work surface and then use both thumbs to push the spacer until it seats against the clip.
Manufacturer:
genuine Mikuni
$2.98