What is an NGK?

Related questions

1. What spark plugs should I use?
2. What happens when spark plugs are bad?
3. What is the advantage of Iridium spark plugs?
4. Which spark plug is better iridium or platinum?
5. What are the benefits of Iridium spark plugs?
6. How often should you change your spark plugs?
7. What happens if spark plug gap is wrong?
8. Do you really need a torque wrench for spark plugs?
9. Is it OK to put anti seize on spark plugs?
10. Should I use never seize on spark plugs?

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