If it's a Dorman unit, it will say Dorman on the bottom, along with their logo and patent number. It's part of the casting.
Out of personal curiosity, and because I want to know what's possible with the Pentastar: what type of oil (make, viacosity, etc) are you running in these fleet vehicles.
Yesterday I put Mobil 1 FS 5W-30 in my 2022 Durango, and fuel mileage seems to have taken a hit. I was running Mobil 1 EP 5W-30 in it.