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Difference of spark plugs for 08 CTT


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Hi,
I ordered spark plugs for doing the maintenance for my 08 CTT. Now I'm not sure anymore because of the PDF-catalogue which I have.
There are two different spark plugs in the Porsche catalogue :

- 999 170 229 90 : Spark plug 14F-5MPUR03 (remark -08) with a gap of 0.8mm

and
- 999 170 228 90 : Spark plug FR6 NPP (remark 09-) with a gap of 0.7mm

Which one do I need? They are both for the engine M48.51, I think I have to get the FR6 NPP

ECS and Suncoast recommend the 999 170 228 90, but what's the difference?

Thank you in advance for the replies


greetz

Edited by ferri
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Thank you :clapping:

I saw that the plugs with the gap of 0.8 where replaced with the plugs and gap of 0.7

because of a new knowledge, but I was not sure and I didn't want to hurt the engine.

 

Does someone know anything further for this replacement of spark plugs in the Porsche-cat?

Of course it's not helpful but it is interesting for me...

 

Edited by ferri
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