P5. What is the best way to select the correct spark plug ?

It is essential to select a spark plug specified by the vehicle manufacturer based on the NGK Recommendations Catalog.

Exemple of how to select the right spark plug type:

NGK Recommendations Catalog

* The appropriate spark plug for the above mentionned vehicle

NOTE

A spark plug is a consummer good. Even correctly selected, it has a limited lifetime. Therefore, provide periodical revision and changes.

• Concerning the spark plug lifetime, see P20 .