With a quantity of two pieces, the O-ring,13.5x1.4 is the most used part in the STARTER-ALTERNATOR-SENSOR diagram.
The sub assemblies and components that make up this Starter-alternator-sensor include this Motor,starter, the most expensive part.
The most reasonably priced component used on the Civic 1979 (z) 3dr1200 (ka) Starter-alternator-sensor is the Washer,plug Drain 14.