Anyone using NGK Iridium R7437-8

R717 · 2012-03-19 19:17:19

http://www.maperformance.com/ngk-iridium-spark-plugs-heat-range-8-r7437-8-evo-ix.html Are they worth the extra money?

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Mar 19, 2012 | 12:17 PM

R717

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From: EVO 8

Anyone using NGK Iridium R7437-8

http://www.maperformance.com/ngk-iri...-8-evo-ix.html

Are they worth the extra money?

Mar 19, 2012 | 03:45 PM

_david_

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From: galicia

Maybe, there are a great spark plugs

I run with ngk R7438-9 and don't have any issues

Here are widely used in rally cars

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