EFF-cientt&reg; Zama Carburetor for STIHL FS38 FS45 FS45C FS45L FS46 FS46C FS55 FS55C FS55R FS55RC KM55 HL45 with 2 Primer Bulb New high quality aftermarket re-adjusted zama carburetor. Fits for STIHL trimmer Replaces ZAMA #'s: C1Q-S66, C1Q-S71, C1Q-S97(A), C1Q-S143, C1Q-S153, C1Q-S186,4140-120-0619 B 4140 120 0619 Package including 1pc carburetor+2 primer bulbs