Spark Plug Experts: NGK Differences

[slow&rusty]

Hey Guys - Trying to decipher between two NGK plugs.

What is or are the differences between:

1) DCPR9EIX

and

2) DR9EIX

On others words what do the "CP" letters reference ?

Thanks!
Yasin

[David]

The P is projected, not sure about the C. The NGK site or brochure is usually helpful.

The bigger question is what are you running a 9 heat range in? That's usually motorcycle territory.

[LEAKYSEALS951]

https://online.flippingbook.com/view/17923346/4/#zoom=true

[slow&rusty]

Thank you both!

David - the heat range "9" is what is recommended by the manufacturer.

Yasin