The engine’s light depends on the spark plug’s quality and each spark plug has its moment. The broad catalogue of NGK spark plugs offers us a model of spark plug and a temperature grade for any occasion; from the resistant and economic NGK CR7 suitable for any situation to the high level platinum spark plugs (NGK CR8HVX) or iridium (NGK CR8HIX) thought for the high revolutions of the competition and for much adjusted engines.

The innovative spark plugs with precious metals such as Platinum or Iridium are specially developed to assure the starting in the most extremes operative conditions, offering the following advantages:
The platinum and the iridium allow using a very thin central electrode, reducing the needed voltage for the starting and getting thus an absolute certainty in the start.
Given the shape of the electrodes the sparks get in a better way the mixture , obtaining a more stable combustion.
The electrodes present an extraordinary resistance to erosion and high temperatures, making the wear and tear slower.