FILTERWEARS Pre-Filter K101K Compatible With AEM Air Filter, 1-4001 Filter Wrap

Filter material: 100% monofilament polyester with water repellent finish standard on all prefilters.
Black closed top, round taper prefilter.
Measurements: 5.25"T, 6.0"B, 9.0"H

Compare to AEM 1-4001 and Outerwears 20-1380.
Fits AEM filters: 21-2019BF, 21-2019Dk, 21-2028DK, 21-2029BF, 21-2029DK, 21-2038BF, 21-2038DK, 21-2039BF, 21-2039DC, 21-2039DK, 21-2049DK, 21-2059BF, 21-2059DK, 21-2069DK, 21-2109DK, 21-3059DK
Fits AEM intake kits: 21-437B, 21-437C, 21-8111DC, 21-8111DP, 21-438C, 21-438P, 21-478WR, 21-642C, 21-642P, 21-8308DC, 21-8308DP, 21-8315DC, 21-8315DP, 21-477C, 21-477P, 41-1401C, 41-1401P, 21-8018DC, 21-8018DP, 21-8019DC, 21-8019DP, 21-8009DC, 21-8009DP, 21-8218DC, 21-8218DP, 21-8301DC, 21-8301DP, 21-8303DC, 21-8303DP, 21-8305DC, 21-8305DP, 21-8309DC, 21-8309DP, 21-8311DC, 21-8311DP, 21-8401DC, 21-8401DP, 21-8005DC, 21-8005DP, 21-8011DC, 21-8011DP, 21-8013DC, 21-8013DP, 21-8017DC, 21-8017DP, 21-8105DC, 21-8105DP, 21-8106DC, 21-8106DP, 21-8107DC, 21-8107DP, 21-8117DC, 21-8117DP, 21-8203DC, 21-8203DP, 21-8207DC, 21-8212DC, 21-8212DP, 21-8214DC, 21-8214DP, 21-8216DC, 21-8216DP, 21-8302DC, 21-8302DP, 21-8304DC, 21-8304DP, 21-8306DC, 21-8306DP, 21-8310DC, 21-8310DP, 21-8403DC, 21-8403DP, 21-8404DC, 21-8404DP, 21-8405DC, 21-8405DP, 21-5011, 21-8001DC, 21-8001DP, 21-8014DC, 21-8014DP, 21-8100DC, 21-8100DP, 21-8104DC, 21-8104DP, 21-8110DC, 21-8110DP, 21-8200DC, 21-8200DP, 21-8202DC, 21-8202DP, 21-8204DC, 21-8204DP, 21-8205DC, 21-8205DP,