The eleven En500c9 Vulcan500ltd 2004 Usa California Canada Engine Mount component parts are all listed in this schematic.
In this schematic the "Bolt-flanged,8x16,bla" is used most often.
Parts such as the Engine Mount: Bolt,flanged,10x170, Bolt,flanged,10x180, Bolt,flanged,8x45, Bracket-engine,rr,lwr are included in the En500c9 Vulcan500ltd 2004 Usa California Canada Engine Mount parts fiche.