I have what appears to be a vacuum hose running from the lower front of the carb forward, then down between 2 and 4 intake runner. It seems to have a PCV valve on it. It goes into a grommet on the tin plate under the intake. Has anyone replaced this grommet? My is very loose and I' m probably getting a vacuum leak there. Can anyone identify this part.

That's the PVC grommet, places like Autozone should carry them,..... that's where I got mine from and works fine