With a quantity of four pieces, the Grommet,horn Stay is the most used part in the REAR CYLINDER HEAD diagram.
Some items from this specific schematic: Washer, Sealing, 10mm , Spark Plug (nd), Plug Cam Shaft, Dowel,pin,14x20.
The Rear Cylinder Head is made up of components including this Head Assy,rear Cy which is the most expensive.