High-quality iridium spark plug with a heat value of 6.Long life compared to traditional copper candles! Reliable operation in both factory and tuned engines!Its main characteristic is the special iridium electrode. Thanks to the high material density of iridium, it is a good electrical conductor and can withstand very high temperatures (iridium's melting point is 2446 degrees Celsius).Advantages:- reliable arc ignition- high ignition intensity- almost 100% utilization of air and fuel- reliable ignition in all operating conditions (cold and hot)- engine flexibility and performance improves and increases- engine operation becomes stableThis version is factory set to a 1.0mm spark plug gap.We do not recommend adjusting the gap of iridium candles at home, because the thin iridium layer is very easily damaged and the spark plug can be destroyed as a result of the gap adjustment!If you have the proven spark plug, but you can't find it on the webshop, then contact us, we will definitely be able to get it for you!