Parts such as the Cylinder Barrel: Plug,sealing, Washer,plug,drain 12, Pin, Lock, 10m/m, Oil Seal,30x46x8 are included in the Gx240k1\lj_a\18ze20e8 Cylinder Barrel parts fiche.
The most reasonably priced component used on the Gx240k1\lj_a\18ze20e8 Cylinder Barrel is the Washer,plug,drain 12.
Of all the components used in this assembly the Barrel Assy(0000) is the most expensive.