How do you verbs a dirty K&N Air filter? ...
Answers: There is a genuine K&N Air Filter Cleaning solution explicitly available for purchase, though as the previous poster has suggested, gasoline would probably suffice.
You can buy the authentic product in a pack from the K&N website surrounded by a kit if you will.
As I understand it you can verbs it with gasoline but don't forget to re-oil it up to that time putting it back within place.