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Fits Husqvarna models 36, 41, 42, 50, 51, 55, 61, 66, 136, 137, 137E, 141, 142, 142E, 242, 246, 254, 257, 261, 262, 266, 268, 268K, 272, 272K, 281, 288, 340, 345, 394, 395, 3120, 3120K-
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Part No. 85-5977
OEM Part No: 503089702, 503717901