- They reduce consumption and exhaust gas.
- They trigger the combustion process, which includes two steps: first, when slightly turning the key, the spark plug warms up in a few seconds up to more than 1,000° in the final part. Then furtherly turning the key, ignition starts. The pulverized fuel is injected into the chamber and strikes the glowing part of the plug thereby starting combustion.
- Available for cars with single or double filament plugs (control and heating) with conventional or ultra-fast preheating.
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