Ugly plugs, what causes this?
01-23-2017, 02:37 PM
#16
CF Veteran
I'm a huge fan of NGK plugs in general. I use them in all of my vehicles when I swap plugs out and have never had an issue with them, either from a quality stand point or a longevity stand point.
01-23-2017, 03:29 PM
#17
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Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
If you research extended reach plugs, they were designed to work well in a spectrum of heat ranges.
I use the ZFR5Ns in my Renix Jeeps with no issues at all.
I use the ZFR5Ns in my Renix Jeeps with no issues at all.