Quote:
Originally Posted by Ron
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I may be wrong in this case of info but from the research I did when i was going to buy these plugs, the stock plugs in our car use the same ones as a GTR which are already heat range 8. Both part numbers are the same for the plugs if you were to order them from nissan. This i did call a dealership also and confirm, so it is safe to say I do not think the heat range of your plugs are the problem.