The Pin(4x18.5) is the lowest priced item on this Oil Pump schematic.
With three applications this Bolt is the most specified part.
Parts such as the Oil Pump: Circlip,10mm, Gear,eng Oil Pump Drive, Bolt, Pump Assy,engine Oil are included in the Dl650 Vstrom 2009 (k9) Usa (e03) Oil Pump parts fiche.