The most reasonably priced component used on the Gsx1100ex 1983 (d) (e02) Oil Pump - Oil Filter is the Bolt.
Parts such as the Oil Pump - Oil Filter: Strainer,engine Oil, O Ring(d:3.2,id:12.9), Plug, Shim are included in the Gsx1100ex 1983 (d) (e02) Oil Pump - Oil Filter parts fiche.
The Suzuki OIL PUMP - OIL FILTER has twenty-seven products enlisted in the schematic.