twelve components are shown in this En400a2 Vulcan 1986 Canada / Liquid Cooled Frame Fitting exploded diagram.
Some items from this specific schematic: Bolt-flanged,8x16,bla, Bolt,flanged,8x45, Bracket-engine,rr,lwr, Bolt,flanged,10x170.
With three applications this Nut,flanged,10mm,blac is the most specified part.