Re aluminum window parts

Hi there,
I have had a really good experience with your platform in the past and I am hoping that you can help me once again. I am trying to source this part for an aluminum window in a rental property. This is just one of the windows, there are three altogether. As you can see whoever came before me has locked in the window opener by installing a wooden sill after the fact. I am hoping that I can order the necessary parts remove the sill, do the install and then reinstall the wooden sill.
Any help is greatly appreciated and as always a really big thumbs up for you guys!!!! You absolutely rock!!!