CAI Filter Elements

They all use a K&N type reusable/washable filter. Personally, I recommend the C&L Racer or JLT II for the most gains. They both use said filter type. All you need is a K&N recharge kit to wash and reuse it.

K&N is about the worst filter in independant testing for filteration. It lets a lot of dirt through. I stopped using K&N myself and switched to AEM dryflow filters. They filter verywell and they don't require oil. AEM makes and sells ddryflow cone filters to fit about any intake. They are starting to make stock replacements as well. I use to defend K&N filters tooth and nail over on the ford truck forum untill a member linked me to acuople of test where K&N did so poorly on filtering. They flow well, too well. Aimsoil filters also got high marks for filteration along with AEM.