I have no way of knowing what is a valid filter and what is not, if the dealership doesn't tell me.

Likewise they can't void my warranty for a dealer mistake. And exactly one month from now the car goes back to Chrysler and my troubles are gone.

So, as far as I am concerned, whatever they sell me is good. It's not like they are going to check anyways. And if it did cause problems, I will just show them my receipt from their parts department!