Seller notes

Premium Wire SetThunderbolt big block marine spark plug wire setFits Mercruiser 454 and 502 cu. in. marine engines from 1982-98 with Thunderbolt ignition systemsIncludes ignition coil wire90 degree spark plug boots8mm blue SSC 100% Silicone wire for ultra low resistance of 270 Ohms per footCarbon-latex coating for superior EMI/RFI suppressionHeavy duty booting used to maintain dielectric propertiesStainless steel and brass terminals for longevity and superior conductivityReplaces Mercury 84-4337...

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