K&N parts matching Ford AR3Z9601B air filter

The Ford AR3Z9601B air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many Ford air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Mike Zullo, California
I used a K&N filter on my '93 Bronco (5.8l v8) and on my '03 Tahoe (4.3l v8) and it made no difference, but it's not expected to deliver the same results on every engine. However, as soon as I slapped one in my '14 Mustang (3.7l v6) the results were nothing short of dramatic. Now, what do I mean by dramatic? Relative to no difference, the effect was dramatic. Can I tell you how much more HP I now have? No. Can I quantify the improvement? No. What I can tell you is that it is very clear that the engine is able to breathe much easier now throughout the power band and especially at higher rpmsmore instant response with absolutely no hesitation above 3.5k rpm in any gear. I noticeably have more power! (except in 1st gear. I'm not faster off the line until ~4k rpm.) When the engine demands air, the K&N filter truly delivers. It is clearly obvious that the stock paper filter was significantly restricting the air flow. If you have a 3.7l v6 Mustang (or probably any v6 Mustang since 2012) you have to get this K&N air filter. The improvement is dramatic for only a $55 change! Further, if you have this Mustang, especially a 3.7l v6, I recommend you get the K&N Air Intake instead if it is legal in your state. Unfortunately it is not in mine, but I have run without using any air filter (for kicks to see how much improvement it would make) and the results were even more ridiculous.
Joseph Maletta, Denver, Colorado
No problems so far!
Michael Peterson, Georgia
Easy installation. Noticed immediate change in acceleration and performance with better transmission shifts. Great product.
33-2431 K&N 33-2431 Replacement Air Filter
List Price: $93.59
Your Price: $59.99