Description Spark Plugs - Plugs have a unique look with a black ceramic body and bold red logo/script - Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation - Multi-rib design of the insulator eliminates flashover - Nickel-plated housing prevents oxidation and corrosion - Multi-layer gaskets and heat crimping process ensure a leak-free, gas-tight seal - Copper core electrode prevents oxidation and corrosion, has good electrical and heat conductivity and creates long spark plug service life Details Model : Copper Units : Pair Hex Size : 16 mm (5/8") Style : DCPR7E Terminal Configuration : Removable Nut Electrode Tip Material : Nickel Alloy Thread Size : 12 mm Heat Range : 7 Ground Electrode .
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