Well I had to reach 50 bucks to get free shipping on an order and was a couple bucks short so I threw in a FULL brand filter for our Pontiac in. Anyone ever cut one of these open? On the outside this PF47 equivalent seems to be extremely strong and durable. The baseplate looks a lot like a German Bosch OEM filter. Im going to run it next time and will try to cut her open and post on here.