Stihl Air Filter 064 066 MS640 MS660 - 1122 120 1621 Get link Facebook X Pinterest Email Other Apps Stihl Parts | Stihl Parts Lookup Part description: Stihl 1122 120 1621 Air Filter Other part numbers: 11221201621 Replacement air filter for Stihl models: 064 and 066 Chainsaws Stihl 064 PartsStihl 066 PartsStihl MS640 PartsStihl MS660 Parts