Thunderbolt Small Block Spark Plug Wire Set | United Ignition Wire 103

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Thunderbolt Small Block Spark Plug Wire Set | United Ignition Wire 103 8mm ignition wire set fits Mercruiser 305 and 350 CID marine engines with Thunderbolt distributors. Thunderbo lt small block marine spark plug wire set Fits Mercruiser 305 and 350 cu. in. marine engines from 1983-98 with Thunderbolt ignition systems Includes ignition coil wire 8mm blue SSC 100% Silicone wire for ultra low resistance of 270 Ohms per foot Carbon-latex coating for superior EMI/RFI suppression Heavy duty booting used to maintain dielectric properties Stainless steel and brass terminals for longevity and superior conductivity Replaces Mercury 84-816761Q4, 84-43376A4, 84-816761T4, 84-813720A4, & 84-816761A4 Show more