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C1Q-S137, C1Q-S137A, C1Q-S152, C1Q-S43, C1Q-S43A, C1Q-S43B, C1Q-S57, C1Q-S57A, C1Q-S57B, C1Q-S43C, C1Q-S57C, C1Q-S57D, C1Q-S137B, C1Q-S137C, C1Q-S152A, C1Q-S152B, C1Q-S264-
Fits Stihl models 017, 018, MS170, MS180, MS180C.-
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Part No. RB-77
OEM Part No: RB77