With all the components that make up the GSX600FU 1998 (W) GERMANY (E22) OIL PUMP assembly. The O Ring(d:3.7,id:21.7) is the most frequently specified with four applications.
The component with the lowest price in the OIL PUMP schematic is the Pin.
Of all the components used in this assembly the Pump Assy,oil is the most expensive.