The Plug,5mm Hex is the lowest priced item on this Cylinder Head Cover schematic.
Some items from this specific schematic: O-ring,21.6x2, Cover D,over Head, Bolt,sealing,14mm, Cover Assy,fr Cyl.
This schematic depicts all components used in the Vt1100c2 Shadow 2001 (1) Australia / Kph Cylinder Head Cover partslist.