Zed Head Posted August 26, 2012 Share #25 Posted August 26, 2012 This site is handy and informative - http://www.ngksparkplugs.com/tech_support/spark_plugs/faqs/faqcode.asp?mode=nmlIf you're on a phone (I'm hoping that's the reason for the effortless grammar) - R means Resistor. Link to comment Share on other sites More sharing options...
Pomorza Posted August 26, 2012 Share #26 Posted August 26, 2012 (edited) hey, whats the difference between bp6es and bpr6es? pepboys gave me bpr6es......R's have a resistor in the plug that, for what I've been told, reduces the amount of electrical noise given off by the plugs. I'm sure there's other reasons but that was the one I was given by a few people.I've never run anything else but NGK's in my Z or any other L motor at that. They're not too expensive and don't seem to give me any issues at all.Hope that helpsJan Edited August 26, 2012 by Pomorza Link to comment Share on other sites More sharing options...
kenmataya Posted August 26, 2012 Share #27 Posted August 26, 2012 tracked it down, but thanks! Link to comment Share on other sites More sharing options...
zKars
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