Idrium IX spark plug DPR9EIX-9 for a Legends racing car. Idrium is an exceptionally clean noble medal and therefore the best possible material for a spark plug. Idrium has special qualities such as hardness, excellent chemical tolerance and 2450°C melting point.
The structure of this spark plug differs from a normal spark plug substantially; the laser soldered Idrium middle electrode is only 0,60mm thick which makes the fuel mixture burn much more faster and effectively. The wing span of the electrodes doesn’t get worn out over use so the spark remains always the same. There’s a gap between the middle electrode and the white insulation layer meant to remove soot. The soot gap and the small heat edge surrounding the middle electrode create a small spark which cleanses any soot or dirt during the drive.