More photo’s and information. Looks like it might be a B24 Liberator..

I am quite sure now that it is the B24j RR-H+ serialnumber 44-40109 after what you have send to me. There where some eye- witness who had seen comming down a big 4 engine airplane.

If my knowledge is up to it, I would say that it is not necessarily a specific B-24 part if even fitted to a B-24 and in fact may not even be American.
The assembly number you give does not tie into my understanding of B-24 part numbers.
Normally a B-24 specific part would, I believe, precede with the number 32.
ie; 32-XXXX-XX.
Of course common fitted parts would be labelled otherwise, but this part looks to be an aeroplane specific part.
Also, as I understand it, an American rivetted on assembly number such as this, would normally involve it being a more fuller data plate with the assembly’s manufacturers detail on it and would not even be rivetted to what looks like an exterior skin.
Where American parts don’t have a data plate as such, then generally what you find is the assembly number stamped straight onto or painted onto the parts surface directly.
I am aware that a B-17 specific assembly is preceded by the number 15.
ie; 15-XXXX-XX.
I don’t know why these numbers are the way they are, but they just are.

I hope this helps if even to just eliminate it.

Bomberboy