Used On Stihl FS45 Carburetor, Replaces for STIHL C1Q-S97, C1Q-S186, C1Q-S66, C1Q-S71, C1Q-S143 C1Q-S153, for 4140 120 0612, 4140 120 0619.Used On Stihl FS38 Carburetor, Compatible for STIHL FS55R FS55 FS55RC FS55T FS55C FS55Z FS55R-Z FS55R-DZ FS55RCE-Z FS55RCE-DZ FS55RCE FS55DZ FS55CEZ FS55CEDZ FS55CE trimmer / brush cutter.Used On Stihl FS55R Carburetor, Compatible for STIHL FS45 FS38 FS46 FS 38 FS 55R FS 45 FS 55 FS45C FS46C FS45Z FS38Z FS46Z FS46DZ FS46CEZ FS46CE FS45L FS45DZ FS45CEZ FS45CE-DZ FS45CE trimmer / brush cutter.Used On Stihl FS55 Carburetor, Compatible for STIHL KM55R KM55RC KM55 KM55RZ KM55C KM55RDZ KM55RCEZ KM55RCE KM55CE kombi motor, FC55 HS45 HL45 HS 45 HL45Z HL45DZ hedge trimmer. Please note that it is suitable for the model before 2013.[All-In-One Kit] Stihl weedeater parts save time and money against separate purchases.[Install And Go] Arrives factory-tuned for your convenience.[Trustworthy Engine Operation] Every stihl hs45 carburetor is wet flow tested to emulate engine's real-world performance.