The Rear Window Wiper Motor assembly is constructed from several parts from which the Wiper Kit, Rr. is the most expensive.
Some items from this specific schematic: Arm, Rr. Window Wiper, Washer,plain,6mm, Spacer, Rr. Wiper, Spacer, Rr. Wiper.
The most reasonably priced component used on the Civic 1975 3dr1200 (ka) Rear Window Wiper Motor is the Spg/washer,6mm.