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Our optional "Yellow Jacket" Spark Plug wires have a high heat Silicone jacket as well as or Hy Heat Silicone Spark Plug boots. The Yellow Jacket wire is 7mm, and has a solid core copper strand wire that is tinned for corrosion resistance.

1703-30 B&B 7mm Hi Heat Silicone Solid Core Spark Plug Wire Set For 616-720 GT's

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