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Mercury 391 5090Q1 Quicksilver Ignition Tune Up Kit for Marinized V8 MerCruiser Engines Made by General Motors or Ford WINTER Permits use of two 30A Permits use of two 30A 125V cable sets Heavy duty acrylic lens High strength to weight ratio for durability and resistance to thermal cracking For marinized V8 MerCruiser engines Made by General Motors or Ford with Mallory Conventional Ignition Systems
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