The O-ring (2h9) is the lowest priced item on this Crankcase Cover 1 schematic.
thirty components are shown in this Xg250 2005 4d61 Spain 1d4d6-351f1 Crankcase Cover 1 exploded diagram.
This CRANKCASE COVER 1 assembly utilises eight Bolt, Flange(4kg)(s) - the highest specified component.