FILTERWEARS Pre-Filter K301 For K&N Air Filters RF-1037 RU-1037

Filter material: 100% monofilament polyester with water repellent finish standard on all pre-filters.
Open top, round taper pre-filter.
Measurements: 5.0"T, 6.5"B, 6.5"H

Compare to K&N RF-1037DK

Fits K&N Air Filters: RF-1037, RU-1037, RP-5167

Fits K&N Intake Kits: 57-2535, 57-2540, 57-2552, 57-2554, 57-6010, 57-6011, 57-6013, 57-9012, 57-9016-1, 77-2552KP, 77-3000KS, 77-9016KP, 57-7001