Parts such as the B-1-1 Air Cleaner Tubing: Valve,check, Tube,3.5x250, Tube,breather, Clamp,d17 are included in the Civic 5d 1300 1980 Hmt B-1-1 Air Cleaner Tubing parts fiche.
The most reasonably priced component used on the Civic 5d 1300 1980 Hmt B-1-1 Air Cleaner Tubing is the Bolt-washer,6x16.