The sub assemblies and components that make up this Cylinder (gt250k include this Cap, Spark Plug, the most expensive part.
The most reasonably priced component used on the Gt250 1973 1974 1975 1976 1977 (k) (l) (m) (a) (b) Usa (e03) Cylinder (gt250k is the Screw.
In this schematic the "Nut (8mm)" is used most often.