Parts such as the Oil Pump (h2-b/c): Fitting,banjo, Gasket, 10,5x16x1 (nas), Washer,6.1x12x1, Bolt-banjo are included in the H2 Mach Iv 1972 Canada Oil Pump (h2-b/c) parts fiche.
Of all the components used in this assembly the Pipe,oil is the most expensive.
This OIL PUMP (H2-B/C) assembly utilises six Washer,6.1x12x1(s) - the highest specified component.