This is a replacemnt Dual Stage Cabin Air Filter.
This filter fits Pony R Parts kit #'s 2700-028, 2700-029, 2700-031.
Posted by Janice on Apr 13th 2019
I gave 5 stars because this is the only cabin fresh air intake filter system for the Crown Victoria that I've seen. Easy to install the kit and replacement filters. The not so fun part is removing the plastic windshield cover to get to the air intake, but well worth it. I live in the desert and can tell a big difference in the amount of dust that comes in through my air vents.
Posted by Matthew Blake on Apr 10th 2019
2008 CVPI - I left a single filter assembly on the HVAC intake for 2 years and still never had particles flowing out of the cabin vents, when replaced the filter was dirty but was much longer lasting than any cellulose filters on recent model cars with need to be replaced every 5000 miles, this filter did 30k without an issue
Posted by David on Jun 3rd 2018
After scouring the web for my part I happened upon a utube video of how to change it given by Pony r Parts. I decided to try ordering from them since I had exhausted all other sources. Guess what, they showed I could order it so I did. I didn't get the part right away they were out of stock. But they were diligent at obtaining it and it arrived a few weeks later. I highly recommend this business especially for those with Ford products.