Of all the components used in this assembly the Head Assembly,cylinder is the most expensive.
The lowest price component in this Cylinder Head parts-list fiche is the Ring,snap.
Parts such as the Cylinder Head: Ring,snap, O Ring(d:3,id:26x157), O Ring(d:2.4,id:37.7), Seal,tachometer Driven are included in the Gs850g 1984 (e) (e01 E02 E04 E06 E22 E24 E25) Cylinder Head parts fiche.