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The DR6HS SPARK PLUG (86-4823) is made with corrosion-resistant plating to ensure ease of installation and removal. It features a five-rib insulator design to prevent flashover. It is also made with a three-step trivalent plating process that utilizes silver chromate and zinc to ensure maximum corrosion resistance. NGK's triple gasket sealing process prevents gas leakage past the shell. It has a solid copper core to improve heat dissipation, conductivity, and temperature range. The DR6HS SPARK PLUG (86-4823) has cold-rolled threads that prevent damage to the cylinder head.
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