K&N High-Flow Original Lifetime Universal Clamp-On Air Filter: High Performance, Premium: Flange Diameter: 4 In, Filter Height: 5.5 In, Flange Length: 1.125 In, Shape: Round Tapered, RG-1001RD

Great sturdy material. Shiny chrome and nice deep red color. Functions as it should, improved HP by about 5. Definitely a starter mod for bigger builds. Throttle response is definitely faster compared to the stock intake on my MK5 Rabbit

Great filter

I bought this to have a second filter for my car. It was of compatible size to the original filter and the ability to connect to different sized outlets is convenient. Seems to be a quality product so far.

Custom CAI couldn't have turned out better, I was going for the "sleeper" style of intake but didn't like the idea of cutting a hole in the hood for a ram cowl induction.This filter as some of you know, it being a K&N filter needs to be oiled and washed to keep contaminants out.The filter pricetag was pretty cheap considering the quality you are getting.The filter looks well made, no factory defects I can see of.If the filter is ducted like I did, you get the added bonus of the intake rush noise, and colder incoming air. No more 'hot air intake' with the filter being setup this way also, just be sure to not choke the engine of air, or you're going to be running the engine with a rich A/F, Size ducting accordingly.The only part of this project that sucked was that I needed to cut a hole into the radiator core support, for the ducting/filter to come through.

The filter worked properly, seems like I'm using more gas, MPG went down on my car.

Bout this to replace Cobb filter on my 2017 ford focus RS. Looks way better in my opinion especially with the k&n intake pipe. Sounds awesome with all the turbo noises and it was super easy to install!

Seems well made and durable.

Perfect fit, works for exactly what I need