Spark plug BS-OHV, model: OHV 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 20, 21, 23, 24, 26, 28, 29, 30, 31, 33, 35, 38, 40, 43, 44, 47, 54, 58, 61. APPROVED UK DISTRIBUTOR. (Channel Islands, Ireland, Northern Ireland, Scottish Isles & Scottish Highlands).
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