please can anyone identify this plastic tubing and what its function was in the engine bay. Many thanks.

[The Heff]

Hello all you Mustang lovers. Please could someone help me identify this piece of tubing that came from the engine bay , I think. Many thanks.

 

[Steve McMahan]

My initial thought, no idea. But, year, model and engine/trans would assist in the ID. I’m unaware of a bracket like that in the 71/73 engine compartments. I think, all “tubes” were either metal or rubber. Others more knowledgeable will chime in.