Loose part after radiator change. Need ID

invalid@example.com (Pfj), Pfj
Sat, 31 May 2025 15:15:41 +0000

2000 2.3 z3

I was installing a new radiator as the over flow nipple had broken. When putting the passenger side, US, hose on this small part fell to the floor. Can anyone id it?

where does it go.

thanks