FILTERWEARS Pre-Filter K306 For K&N Air Filter E-3336, RK-3901 Filter Wrap

Direct from manufacturer. Made in the USA.

Filter material: 100% monofilament polyester with water repellent finish standard on all pre-filters.
Open top, round straight pre-filter.
Measurements: 7.5"T, 2.5"H

Compare to K&N RK-3901PK 
Fits K&N filter: E-3336

Fits K&N Intake: RK-3901