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Magnetic Suppression Core manufactured for your specific application.Kevlar® core for maximum durability and long lifeDurable stainless steel wound conductor for maximum horsepower and engine performancePremium silicone jacketing and boots for the ultimate in high temperature protectionSuperior RFI suppression for the most sensitive electronic systemCorrosion resistant stainless steel spark plug and distributor terminals for maximum conductivityOE style boots provide a sealed barrier against heat, dirt and moistureThunderbolt type ignitionApplication: Flagship, Indmar, Marine Power & Mastercraft - 302, 351, 5.7L, 5.8L ('74 FF & R models), 350, 454, 5.7L, 7.4L, 8 cylinder, conventional ignition. Mercruiser - 280, 330, 370, 400, 440, 460, GM 198, 225, 228, 250, 260, 898, Ford 225, 233, 255, 888, 8 cylinder, conventional ignition. OMC - 7.5L, King Cobra ('87), 370 King Cobra ('88), 460 King Cobra ('88-'89), 8 cylinder, conventional ignition