With all the components that make up the CB750K 1980 (A) FOUR ENGLAND GASKET KIT B assembly. The O Ring 9.5x3 is the most frequently specified with four applications.
Parts such as the Gasket Kit B: Gskt,point Cover (nas), O Ring,21.5m/m, Gskt,pomp Cover (mca), O,ring.24mm are included in the Cb750k 1980 (a) Four England Gasket Kit B parts fiche.
The component with the lowest price in the GASKET KIT B schematic is the O Ring 19.4x2.8.