Of all the components that make up this Turn Signals the Washer,plain,4mm has the lowest price.
Some items from this specific schematic: Gasket,signal Lamp (nas), Screw,tapping,4x25, Lamp-assy-signal,fr, Washer,plain,4mm.
This TURN SIGNALS assembly utilises eight Washer,plain,4mm(s) - the highest specified component.