OEM Carburetor / Stihl 1122 120 0621Pack Size:1Stihl 1122 120 0621, Tillotson 40-HS-320A, Walbro WJ-67BHL Supply H20660, HL Supply HS-320AStihl 066, MS650 and MS660 chainsawsEthanol: Not compatible with greater than 10% ethanol fuel, This carburetor will not accept OEM repair kit