The sub assemblies and components that make up this Oil Cooler include this Bolt, the most expensive part.
The most reasonably priced component used on the Re5 Re5m Re5a 1975 1976 (m) (a) Usa (e03) / 497cc Rotary Oil Cooler is the Washer,lock.
With four applications this Spacer,8.5x14x9 is the most specified part.