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2014 Dodge Dart GT
1,485 Posts
I didn't know anything about the copper plugs until recently, and this is View attachment 130273
View attachment 130275
View attachment 130274
View attachment 130272
what they look like at just over 64k. Swapped with NGK Iridum IX 4469 plugs gapped at.045. The change in the idle smoothness and how it runs is excellent. Was running a little rough at idle. Also put a new PCV valve and run nothing but Pennzoil Platinum PurePlus in my motor.
I replace my Autolite 5325 coppers every 10k to 15k miles. Do not last nearly as long as iridium, but give you other benefits.

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