This SPEEDOMETER assembly utilises two Screw Washer 4x6(s) - the highest specified component.
Parts such as the Speedometer: Cable Comp,inner, Oil Seal, Cable Comp,spdmt, Bulb are included in the Z50j4 Gorilla Japan Speedometer parts fiche.
The Screw Washer 4x6 is the lowest priced item on this Speedometer schematic.