The lowest price component in this Turn Signals ('78-'79 Kl250-a1/a parts-list fiche is the Washer-plain,6mm.
On this parts fiche the Screw-pan Head,4x20 is the most specified component.
The Turn Signals ('78-'79 Kl250-a1/a assembly is constructed from several parts from which the Turn Signal Lamp Assembly is the most expensive.