I found this flange part in a box of assorted vintage MOPAR parts and can't figure out what its application could be. It sort of looks like a toilet flange for your household commode but I don't think it's that. I think it's some sort of automotive fitting.
It has a 4" OD and 2" ID -then a seat and drops to 2nd 1.4" inner ID. No identifying marks or stamping. It's a heavy steel part. Any idea what this might be and it's purpose ?