The thirty-two Gsxr1000 2009 (k9) Usa (e03) Fuel Tank component parts are all listed in this schematic.
On this parts fiche the Fastener is the most specified component.
A sample from the products for the Fuel Tank include: Tank Assy,fuel(red), Tank Assy,fuel, Hose,tank Breather No.2, Hose,fuel Tank Water Drain.