Carb heat cable bracket on air box broken...replace whole air box?

I still need to get my A&P to see the plane but I had the bracket that secures the carb heat cable sheath break off today making the carb heat inop. In planning for the mechanic’s visit, I like to get as many parts and supplies ready as I can. Is this something that can fabricated and attached with a screw going into the airbox or does the whole air box typically need to be replaced?

Thx