K&N parts matching BMC FB78420 air filter

The BMC FB78420 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
Jovanni Valdez, Montebello, California
Like previously mentioned in one of the comments, it is hard to explain how great of a product this is. Instantly felt more HP in my car and you can hear the car breathing in air better. I highly recommend.
Michael Caumeran, Lomita, California
Best filter ever! I have this in all my cars and motorcycle. It works as it should and free, fast shipping.
George Baker, Chicago, Illinois
Had a K&N air filter in my Audi and it added a touch of response to throttle, and low and behold, it accomplished the same with my Lexus IS 250. You can actually sense the engine breathing a little easier on take off. I am not talking drag racing here, but rather a more pleasant feel to the first fraction of an inch of gas pedal depression. I did notice that the price has creeped up, say 30 over 10 years, but what are you gonna do. For me, it's worthwhile. How many performance enhancements are there that a novice can install w/o voiding the warranty. A nobrainer.
33-2452 K&N 33-2452 Replacement Air Filter
List Price: $93.59
Your Price: $60.99