K&N parts matching BMC FB31801 air filter

The BMC FB31801 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
Mark, United Kingdom
Never needs replacing and does feel like I have more responsive power especially while overtaking.
Teodor Nedu, Hartlepool, United Kingdom
Excellent product. Does what it says on the tin. I get around 2-3 mpg extra in my 2.0 petrol focus c max and noticeably faster acceleration. More than happy with my purchase and more than happy to recommend this to anyone.
Peter Tyburski, Manchester, United Kingdom
I ordered this filter on Wednesday morning 22-01-2014 and it arrived at 11.am Thursday 23-01-2014. Fantastic service. Half an hour later it was installed, I then went for a drive through the town and saw an immediate 50 percent improvement> Then drove out of town on 40 mph roads. The performance increased by another 35 percent approx. I am now getting an average 32 mpg around town. My car is a 2005 Ford Focus C-max 1.6 petrol which was giving poor mpg. Your filter is excellent Thank you.
33-2877 K&N 33-2877 Replacement Air Filter
List Price: $68.09
Your Price: $43.99