I am restoring a 240z heater box. The little rubber grommets that the side vent door rods slide through (to open and close) are hardened and falling apart on my box. I found something very close to the original grommets at Marco Rubber. Part number is GMT1029. Their phone number is 603-468-3600. No way to order online. I can't recall ever seeing suitable replacements so thought I would share.
Attached are 3 photos.