The lowest price component in this Cylinder Head Cover parts-list fiche is the Bolt.
The Bolt(7x17.5) is the most widely applied product in the GS500E 1998 (W) USA CANADA (E03) (E28) CYLINDER HEAD COVER ( four times ).
This schematic depicts all components used in the Gs500e 1998 (w) Usa Canada (e03) (e28) Cylinder Head Cover partslist.