heat range on stock plugs

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12-02-2013, 05:01 PM

trashman139

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heat range on stock plugs

I have a 09 CC with with a hemi and I needed to know what the heat spec is on a stock plug. I want to go with something different but have no idea where to start. Any suggestions would be great.

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12-02-2013, 05:19 PM

oldjeep

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Not too tough to figure out since the heat range is always part of the plug number.

LZFR5C-11

Heat Range is 5

http://www.ngksparkplugs.com/techinf...tnumberkey.pdf

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