K&N HA-4506-T Powerlid Airbox CoverK&N HA 4506 T Powerlid Airbox Cover The K&N Powerlid eliminates restrictive ATV intake snorkels by replacing the stock air box lid with a high airflow filter lid. The Powerlid works in conjunction with a K&N replacement air filter (sold separately) to provide excellent filtration with less restriction allowing increased airflow for more horsepower. The POWERLID snaps in place with no air box modification necessary. All K&N Powerlids come with a