HKS Super Fire Racing M35i Iridium Spark Plug (NGK 7, ISO) - Single

The HKS Super Fire Racing M35i is an ISO-type iridium spark plug with an NGK 7 equivalent heat range — the warmest M-series step, suited to mildly tuned or street engines that don't need a colder plug. The 0.6 mm iridium center electrode and platinum-chip outer electrode deliver strong ignition and long life, with thermal-edge anti-fouling. Fits ISO φ14 applications across a range of Japanese engines. Sold individually.

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