The Washer(6.5x18x1) is the lowest priced item on this Rear Fender schematic.
With all the components that make up the GS400E 1978 (C) (E01 E02 E04 E17 E18 E21 E22 E24 E25 E30 E34 E39 REAR FENDER assembly. The Cushion is the most frequently specified with two applications.
The Suzuki REAR FENDER has thirty-one products enlisted in the schematic.