mustang help

So i have a specific part i need help identifying for a 98 v6, went to multiple mechanics and they have no idea what its called. It sits on top of the thermostat and houses the coolant temp sensor anyone know what its called and where i can order on from? It cracked you can see in the pic where...

hey I'm new here and was wondering if anyone had a similar problem with their mustang like me. My mustang has been having a hard time starting lately and when it finally does run it idles at 1100 rpm and acts like the chokes on and also idles rough under 1500 rpm. If I give it gas while it's in...