IRIDIUM POWER Spark Plugs IW22 (6-pack) for Porsche 911 T / 924 / 944 S2

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

• Porsche 924 (1976–1979)

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