IRIDIUM POWER Spark Plugs IK22 (6-PACK) for Porsche 964 / 993 / 996 / 997 / Cayman

Ultrafine Electrode By utilizing iridium power, DENSO is suddenly able to 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 spark plugs have the world's smallest center electrode with a 0.4 mm diameter. This means that the voltage requirement is reduced and ignition performance is significantly improved. Manufacturer: Denso.

• Porsche 996 GT2 (2001–2005)

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