Which of the following is not the main part of a spark plug?

Which of the following is not the main part of a spark plug? Correct Answer The insulator

The spark plug has three main parts, the center electrode, the ground electrode, and the insulator separating them. Besides these, there are the body shell, the sealing ring, and the gasket washer. The distributor cap is not a main part of the spark plug.

Related Questions

Which of the following spark plug increases the resistance to increase the voltage required to jump across the spark plug gap?
How is the voltage of the used spark plug to fire when compared to a new spark plug?
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have