The four Xg250 2005 4d61 Holland 1d4d6-300e1 Cylinder component parts are all listed in this schematic.
The lowest price component in this Cylinder parts-list fiche is the O-ring(36y).
A sample from the products for the Cylinder include: Bolt, Socket, Cylinder 1, O-ring(36y), Gasket, Cylinder (nas).