Looking for Brake booster grommet

[jbaker4341]

Looking for a Brake Booster Check Valve Grommet. The hole in my brake booster is 7/8" and the center hole of the grommet is approx 5/8". Any ideas where I can get a replacement? I got a kit from Advance auto but they're the wrong sizes.

 

[Lumpy Grits]

Take yours with you and head to NAPA.
Gary