Fits STIHL FS75, FS80, FS85, FS85R, FS85T, FS85RX, HS75, HS80, HS85, BG75, FR85T, FR85, HT70, HT70K, HT75, KM85, KM85R, KA85R. Replaces OEM part for 41371410500, 41371402801, 41371242800, 41371241500 for brush cutters, trimmers, leaf blowers, hedge trimmers long reach, pruners, brush cutters. You will receive 1x air filter cover, 1x filter housing, 1x air filter air, 1x pre-filter. Replace OEM for: Filter cover air: 41371410500 Filter housing：41371402801 Air filter air：41371242800 Pre-filter: 41371241500 For Stihl FS75 FS80 FS85 BG75 HL75 HL75K HT70 HT75 HS75 HS80 HS85 FC75 FC85 SP80 SP85 KM85. Reduce cylinder wear, protect the engine from damage and extend the motor life