Ignition Coil Module for STIHL FS75 FS80 FS85 FC85 HT70 HS75 HL75 HT75 HL75K HS80 HS85 KM85 # 4137 400 1350 Replace manufacurer part number: 4137 400 1350 Fitment models: STIHL FS75 FS80 FS85 FC85 HS75 HL75 HT75 HL75K HS80 HS85 KM85 Qty: 1pc Please compare it with your old igntion coil, make sure it's the correct one