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C1Q-S28, C1Q-S28A, C1Q-S28B, C1Q-S28C, C1Q-S28D, C1Q-S28E, C1Q-S29, C1Q-S29A, C1Q-S29B, C1Q-S29C, C1Q-S29D, C1Q-S30, C1Q-S30A, C1Q-S30B, C1Q-S30C, C1Q-S41, C1Q-S41A, C1Q-S42, C1Q-S44, C1Q-S44A, C1Q-S45,-
Fits Stihl models 017, 018, BG75, F85RT, FC55, FC75, FC85, FS38, FS45, FS46, FS55, FS55RT, FS75, FS80, FS85, HL45, HL75, HL75-0-90, HL75-30, HS80, HS85, HT70, HT75, KM55, KM85, KW85, MS170, MS180, MS180C.-

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Part No. RB-66
OEM Part No: RB66