NGK Iridium Spark Plugs Heat Range #7
These NGK Iridium spark plugs offer improved durability and anti-fouling properties, suitable for turbocharged Subaru and Honda vehicles with modified engines.
- The description claims that iridium plugs can use larger gap settings with less voltage.
- The description claims that regapping these plugs can be done but comes with risks.
- The description claims that these plugs do not come pre-gapped.
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