Does anyone know the size of the rubber breather grommet that is on the firewall side valve cover. (not the PCV grommet) Outer ID? Inner ID? Dorman p/n? And yes, I know the FieroStore sells both of them.
Thanks, Kit

You might have to measure your old one.
https://www.dormanproducts....=Pontiac&model=Fiero

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[This message has been edited by fierosound (edited 05-22-2025).]

Yes, it looks like I will need to do that.
I was hoping I could just order one based on your guys input so I won’t have to go in there twice.
Thanks, Kit