I ordered six PF64's from RockAuto and they were shipped in an AC Delco bulk package marked for 12 filters. These oil filters did not have individual wrappings or individual boxes like a typical retail AC Delco filter. They all looked the same as the PF64 cut-open in this thread:https://www.bobistheoilguy.com/foru...f-64-factory-filter-cut-open#Post5297063
Big difference is that you can observe that plastic thing at the bottom of the filter, and a weird "two tier" ADBV setup at the opening of the filter. There appears to be a grate floating above a traditional ADBV.
I went to the local store today to buy groceries, and browsed the auto aisle and found a bunch of retail packaged PF64's. I opened up the box and they all looked like normal filters
First pic is the retail filter from the store.
Second pic is the filters I bought in bulk from RockAuto, which resemble the factory PF64 from the other thread.