This Oil Pump Assy is the most expensive of the items that make up this Oil Pump assembly.
Parts such as the Oil Pump: Gasket, Pump Cover (nas), O-ring (706), Cover, Pump Gear, Screw, Pan are included in the Xt225 Xt225c 1998 (w) Usa California Oil Pump parts fiche.
On this parts fiche the Screw, Flat is the most specified component.