K&N parts matching BMC FB85501 air filter

The BMC FB85501 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many BMC 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.
Mike Peacock, Richmond , Virginia
Easy install - 5 min. and done. Thanks Ford. Ran K&N on '05 F150 for 160,000 miles - all good. Expect it will aid my Mustang. Just wish you made one for my '88 Ford Ranger SC 4x4.
Bobby Montgomery, Crestwood, Kentucky
I've been using it for about 2 months now and it has worked great. It still looks brand new, no bends, still clean.
33-2431 K&N 33-2431 Replacement Air Filter
List Price: $93.59
Your Price: $59.99