The K&N PreCharger® filter wrap is specially designed to extend the service interval of your K&N Filtercharger filter when used in very dusty conditions. They are made from durable polyester material containing a uniform weave. The PreCharger will stop small dirt particles with minimal restriction to the airflow of the filter.

Specifications
Wrap Type    Precharger
Color    Black
Material Used    Polyester
Inside Diameter    4.5 in (114 mm)
Height    5 in (127 mm)
Closed Top    Yes
Package Contents    1 PreCharger Wrap
Package Quantity    1
Warranty    1 Year Limited
Air Filter Shape    Round
Product Style    Filter Wrap - Round Straight
Weight    0.1 lb (0 kg)

Product Box Height    0.75 in (19 mm)
Product Box Length    6.25 in (159 mm)
Product Box Width    5.25 in (133 mm

Fits the following part numbers
BD-6502, HA-3350, RA-0540