Parts such as the Throttle Body: Body Assy,throttle, O Ring,pilot Air Screw, Washer, Screw are included in the Dl650a Vstrom 2009 (k9) Usa (e03) Throttle Body parts fiche.
The Washer is the cheapest item from this partsfiche.
With a quantity of two pieces, the Screw is the most used part in the THROTTLE BODY diagram.