[Closed Case]

After searching a variety of Subaru OEM parts options online I can say with certainty they're full of (it), listing things I know are not true and are logically in conflict with their own data. but nowhere do I come across that flat/eared with holes muffler gasket in later model Subarus.

So you have what you have in front of you. The round ones I remember are part #44011A.

Show me a pic of what you removed from your exhaust-to-muffler connection.

You solved the mystery, thank you.

We bought several Nameless mufflers, and in-between buying and reselling them used, buying better models [multi-chambers] we lost track of gaskets.

2021 2.5 Limited - not a single Subaru Parts Department could come up with an "OEM gasket" down pipe to muffler.

"We are not detecting anything there sir, no call-out for a gasket.... too new to our catalog."

So which is the OEM

 

[Closed Case]

So to ask the question correctly, OEM gasket verse aftermarkets.