Iridium Tough spark plugs offer improved horsepower and reduced fuel consumptionDENSO Super Ignition Spark Plug EC22HPR-D70.4mm diameter iridium alloy centre electrode0.7mm needle-type platinum alloy ground electrodeIridium tip is fully protected by a laser weldingReduced CO, CO2 and HC emissions due to improved ignition sparkBuilt-in resistor to eliminate electromagnetic noise interferenceLasts beyond 100,000 miles for ultimate endurance
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