IRIDIUM POWER Spark Plugs IW20 for Porsche 356 / 911 / 964 Turbo / 924

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

• Porsche 924 (1986–1987)
• Porsche 924S (1986–1987)

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