Parts such as the Cylinder: Washer(10x15x1.5), Pad,cylinder Head, Bolt,stud, Hose,oil Crankcase,r are included in the Gs550l 1985 (f) Usa (e03) Cylinder parts fiche.
With sixteen applications this Pad,cylinder Head is the most specified part.
The lowest price component in this Cylinder parts-list fiche is the Gasket 8.2x14x1 (nas).