Of all the components that make up this Taillight ('78-'79 Kl250-a1/a1a/ the Washer-spring,6mm has the lowest price.
A sample from the products for the Taillight ('78-'79 Kl250-a1/a1a/ include: Damper,rubber, Damper, Tail Lamp Bracket, Screw-pan Head,4x50.
On this parts fiche the Washer,6.5x20x1.6 is the most specified component.