Stihl Replacement Air filter combo fits Stihl BG75, FC75, FC85, FS75, FS80, FS85, FS85R, HL75K, HS80 and HS85 Sthil BG 75, FC 75, FC 85, FS 75, FS 80, FS 85, FS 85R, HL 75K, HS 80, HS 85