The Screw,pan 5x18 is the lowest priced item on this Left Cylinder Head schematic.
With a quantity of eight pieces, the Guide,valve is the most used part in the LEFT CYLINDER HEAD diagram.
Parts such as the Left Cylinder Head: Bolt,flange,10x87, Insulator,carb, Band,insulator, Dowel,pin,12x20 are included in the St1100a 1998 (w) Australia / Abs Left Cylinder Head parts fiche.