IRIDIUM POWER Spark Plug IW22 for Porsche 911 T / 924 / 944 S2

Ultrafine Electrode By harnessing the power of iridium, DENSO is able to drastically reduce the surface area of the center electrode – the critical component of a spark plug. Unlike a typical platinum plug with a 1.1 mm diameter center electrode, DENSO Iridium Power plugs feature the world's smallest center electrode with a diameter of 0.4 mm. This means that voltage requirements are reduced while ignition performance is greatly improved. Manufacturer: Denso.

• Porsche 924 (1976–1979)

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