PART NUMBER: 4140-140-6904;41401406904;4140 140 6904 COMPATIBLE WITH:Spark Arrestor Fits Stihl models: FC 55, FS 38, 45, 46, 55, HL 45, KM 55.4140-140-6904 Spark Arrestor is important component for ensuring the safe and stable operation of equipment PACKAGE INCLUDES: You will receive 1Pcs Spark Arrestor MATERIAL:The Spark arrester of a trimmer is made of metal or other high-temperature and corrosion-resistant materials to ensure that it can withstand the effects of high temperatures and harsh working environments for a long time NOTE:Please confirm that the model you need to buy matches our model before ordering Spark Arrestor Fits Stihl models: FC 55, FS 38, 45, 46, 55, HL 45, KM 55.4140-140-6904 Spark Arrestor is important component for ensuring the safe and stable operation of equipment