The Screw-pan-cros,6x30,b is the lowest priced item on this Engine Cover(s) schematic.
Some items from this specific schematic: Gauge,oil Level, Cover-chain, Bolt-flanged-small, Cap-oil Filler.
With all the components that make up the ZX550A2 GPZ550 1985 EUROPE UK FR FG GR IT NR SD ST ENGINE COVER(S) assembly. The Bolt-flanged-small is the most frequently specified with four applications.