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Spark Plug Wire Sets - Mercruiser - 18-8804-1
Spark Plug Wire Sets - Mercruiser - 18-8804-1. Replacement part for 8 cylinder Thunderbolt ignition type, Mercruiser Inboard/Outboard #84-813720A2, 84-813720A3, 84-813720A4, 84-8167671A4