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BOSCH 7927 Copper with Nickel Spark Plug - Single
Heavy-duty nickel center electrode ensures longer life than standard copper plugs
Copper core provides better heat transfer for resistance to pre-ignition and fouling
Metal glass fused resistor maximizes interference suppression
Ribbed insulator design prevents misfire due to current leakage
Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize
Bosch Super Plus spark plug has a premium copper core plus yttrium enhanced center electrode providing extended performance life over conventional copper core spark plugs.