The most reasonably priced component used on the Gcv135\a2e1\14zm01e4 Cylinder Barrel is the Spring,valve.
This CYLINDER BARREL assembly utilises four Bolt Flange 6x12(s) - the highest specified component.
Parts such as the Cylinder Barrel: Oil Seal 25.4x62x, Cover,head, Bolt,flange,6x14, Plug,spark Bpr6es are included in the Gcv135\a2e1\14zm01e4 Cylinder Barrel parts fiche.