The component with the lowest price in the STARTER CLUTCH schematic is the Bolt, Hexagon Socket Head.
Parts such as the Starter Clutch: Washer Plate 371115580000, Bolt, Hexagon Socket Head, Bearing, Cylindrical(51y), Shaft 1 are included in the Xg250 2005 4d61 Italy 1d4d6-351f1 Starter Clutch parts fiche.
In this schematic the "Bolt, Hexagon Socket Head" is used most often.
