twenty-five components are listed in the schematic for this Er300bhfa Z300 2017 Europe,middle East,africa Engine Cover(s) .
A sample from the products for the Engine Cover(s) include: Ring-o,39.4x3.1, Cover-chain, Bolt,6x30, Pin,dowel,6.2x8x14.
On this parts fiche the Bolt,6x30 is the most specified component.