Parts such as the Fuel Pump: O Ring, Tube-assy,fuel, Pump-fuel, Bolt,flanged,6x16 are included in the Kx450eaf 2010 Europe Fuel Pump parts fiche.
On this parts fiche the Bolt,flanged,6x16 is the most specified component.
The most reasonably priced component used on the Kx450eaf 2010 Europe Fuel Pump is the Bolt,flanged,6x16.