FUEL FILTER Replaces: Hus 503 44 32-01, 503-4432-01, 5018776-01, 5018776-02, 5021618-01 For 3/16" fuel line Replaces: Hus 503 44 32-01, 503-4432-01, 5018776-01, 5018776-02, 5021618-01For 3/16" fuel lineFits Pro & Poulan Promodels 266, 268, 394Fits Hus models 36, 40, 41, 42, 45, 50, 51, 61, 66, 181, 281, 234, 298, 2100, 2101, & 394 Pro (165R, RX, 244RX)