The Accessory(lower Cowling) assembly is constructed from several parts from which the Lower Cowling,m.f.s.b is the most expensive.
Some items from this specific schematic: Cover,lwr,rh,m.f.s.bl, Bolt,socket,6x20, Bolt,socket,5x16, Bolt,flanged,6x25.
The Washer,5.2x12x1.0 is the cheapest item from this partsfiche.