RS2 fuel filler neck issue

[JayCab]

Fuel Tank. That might get a bit “interesting” on the customs declaration / shipping papers

[Crasher]

It is moulded into the tank and part of the roll over fuel spill protection.

[effe75]

Hi everyone!
I have a problem with the fuel filler neck of my RS2: the metal closure that opens when you put the nozzle and seals the tank once you remove it is damaged.
My question is: can this part be replaced, or does it come with the whole tank? I checked on ETKA and I didn1t see any specific replacement part, apart from the cap and o-ring.

Hope my description is clear:/

Thank you!