The component with the lowest price in the BOTTOM COWLING schematic is the Bolt (682).
Parts such as the Bottom Cowling: Apron 1, Apron 2, Coller (6e5), Clamp, Fuel Pipe 2 are included in the 150 175 200 Etln Etxn 1984 Bottom Cowling parts fiche.
This BOTTOM COWLING assembly utilises six Bushing (697)(s) - the highest specified component.