Some items from this specific schematic: O Ring, Cap, Screw, Bolt.
The lowest price component in this Master Cylinder parts-list fiche is the Washer.
The Gt250 1973 1974 1975 1976 1977 (k) (l) (m) (a) (b) Usa (e03) Master Cylinder consists of nine pieces with the Piston & Cup Set being the most expensive.