The Washer,6.1x12x1 is the most widely applied product in the KD100-M4 1979 CANADA OIL PUMP ( six times ).
Of all the components that make up this Oil Pump the Screw-pan-cros has the lowest price.
Some items from this specific schematic: Grommet, Washer,6.1x12x1, Pump-assy-oil, Screw-pan-cros.