In this schematic the "Seal,vlv Stem" is used most often.
The Gasket Kit A is made up of components including this Gasket Kit A which is the most expensive.
Parts such as the Gasket Kit A: Gskt,head,cover (nas), Gasket,cyln.head (nas), O-ring,27x2.0, Gskt,head,cover (nas) are included in the Z50jn Monkey Baja Japan Gasket Kit A parts fiche.