Aftermarket Stihl BG75, FC75, FC85, FH75, FR85T, FR85, FS75, FS80, FS80R, FS85, FS85R, FS85T, FS85RX, HT70, HT75, HL75, HL75K, HS75, HS80, HS85, KA85R, KM85, KM85R, KR85, KW85, SP80, SP80K, SP81, SP85, SP85K String Trimmers Air Filter Cleaner Cover OEM 4137 141 0500