PVC fitting help ?

I need to replace this cap .
It has an ear broken off.
I've tried a few Box store searches , no luck.
What is it called and where can i buy one ?
Thx for any help.
Much appreciated.

I would think you would call that a cleanout plug or cap.
Looks different from most I've seen however. Is it threaded all the way ? Or maybe a special 1/4 turn type ?

No seal fit taper on inside of plug
Rubber gasket ring .
If I remember correctly.

Looks like a threaded center plug to me

If you can get some good pictures of it and pictures of the wye it fits into , go to a professional plumbing supply house where the plumbers buy their stuff. Someone there can probably recognize it or offer an alternative that will fit.

ok i just spent awhile googling pics of clean out plugs

Genova twist-lok clean out plug .
doesn't appear to be available in the 4" anymore.

Thx for the help[ . but i will try a good plumbing store,
Might get lucky.

" Genova " # 71874 ( #71872 is 2" )

Just get a plug that has a rubber enter liner and expands when you turn the wing handle on the outside. Do not go to the big box stores. Go to a Ace hardware store or a mom and pop store. They will know what you need, take the picture with you.

just google it and order on line .

I wouldn't trust one of those long term to hold back what I think is on the other side !!!

I am looking at the twist lock plug.
Thx for the help