It must have characteristics such as "easy emission of sparks" and "good ignition capacity" as well as excellent heat resistance, thermic conductivity, durability and mechanical resistance.

To endure rigorous conditions, this spark plug electrodes material and configuration are listed below:

1- Electrodes material: Most of them use precious metals, such as platinum or Paladium/gold .

2 - Electrodes configurations: Thin electrodes provide better spark emission and improve ignition capacity .

3 - Ignition end isolator configurations: For a better answer to acceleration, special configurations are used at the isolator ends.