The Bolt(6x16) is the cheapest item from this partsfiche.
The nine Gsxr600 2001 (k1) Usa (e03) Oil Cooler component parts are all listed in this schematic.
Parts such as the Oil Cooler: Hose,oil Cooler Water Outlet, Filter Assembly,engine Oil, Clamp, Cooler Assembly,oil are included in the Gsxr600 2001 (k1) Usa (e03) Oil Cooler parts fiche.