K&N parts matching BMC 21701 air filter

The BMC 21701 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
Dave Pitches, Mablethorpe Lincs, United Kingdom
As usual, improved performance by around 8 and fuel economy. Fitted to my Astra H 1.6 vvt with a lpg system fitted. I don't fit cone filters, but K&N replacement filters into existing airbox. My BMW Z3 2.8 has had one fitted for 2 years now and breaths very freely.
Rémy Pelegry , Montastruc-la-Conseillère, France
ASTRA G DTI 2.2 125 CV Installation facile, la voiture respire, amélioration à bas et haut régime. À compléter en supprimant les restrictions d air dans la boite en entrée et sortie (cônes).
Lee Roberts, London, England
Good product, would definitely recommend it and use this product again.
33-2787 K&N 33-2787 Replacement Air Filter
List Price: $78.19
Your Price: $49.99