ISE Replacement Carburetor for Stihl FS100
Replaces Part Numbers: 4180 120 0611 , 4180-120-0611 , C1Q-S174
Fits Models: Stihl FS87, FS90 FS100 & FS110. Also fits HT100, HT101, FC90, FC95, FC100, FC110, HL90K, HL95, HL95K, HL100, HL100K, SP90, SP90T, FT100, KM90, KM90R, KM100, KM100R & KM110R