The Oil Pump is made up of components including this Pump-assy-oil which is the most expensive.
On this parts fiche the Pin,dowel,6x8 is the most specified component.
Parts such as the Oil Pump: Bolt,socket,6x16, Screw-pan Head,6x25, Rotor-pump,inner, Collar,13x20x9 are included in the Klx650a2 Klx650r 1994 Europe Oil Pump parts fiche.