With a quantity of four pieces, the Washer,6.1x12x1 is the most used part in the OIL PUMP ('72-'73 G5-A) diagram.
Parts such as the Oil Pump ('72-'73 G5-a): Oil Pump Cable Lever, Fitting,banjo, Gasket,oil Pump (nas), Oil Pump Assy are included in the G5b 1974 Canada Oil Pump ('72-'73 G5-a) parts fiche.
The most reasonably priced component used on the G5b 1974 Canada Oil Pump ('72-'73 G5-a) is the Screw-pan-cros.