The lowest price component in this Oil Pump parts-list fiche is the Pin(4x15.8).
Of all the components used in this assembly the Pump Assy,engine Oil is the most expensive.
nineteen components are listed in the schematic for this Dr650r 1990 (l) (e2 E4 E15 E16 E17 E18 E21 E22 E24 E25 E34 E39 E Oil Pump .