Of all the components that make up this Meter(s) the Washer,6.5x20x1.6 has the lowest price.
Some items from this specific schematic: Damper, Cover-meter Case,upp, Bulb,12v3.4w, Tachometer,x1000r/min.
This METER(S) assembly utilises six Bulb,12v3.4w(s) - the highest specified component.