Aren't Champion Plugs 9407 the recommended plug I put those in for about 50 miles before my head issue then went back with NGK 93175 from RockAuto for about $6 each due to what I had read on here about the Champion plugs not being that great

 

Guess I didn't even ask what year and engine we're talking about here mine is a 2012 3.6 so may be way off base with answer

 

I just did mine this spring. I put NGK Laser Iridium Spark Plug 6858 from Autozone back in there. $31.00 The old ones had a 100K on them, it does run a lot better with the new ones. probably 8-9 thousand miles so far no issues.

And yes, There are a lot of counterfeit parts out there. It's like a billion dollar market.

 

I just did mine this spring. I put NGK Laser Iridium Spark Plug 6858 from Autozone back in there. $31.00

I just looked this up. Is it actually $31 per plug?

https://www.autozone.com/external-engine/spark-plug/p/ngk-laser-iridium-spark-plug-6858/198675_0_0

 

When I need them, they will be purchased from my Dealer. OEM replacements.

 

Well that's the obvious, but my local Mopar Dodge/Jeep dealer here in the DFW area did not have any and you do realize that NGK makes the plugs for Mopar anyways. As a matter of fact the thermostat and housing I bought from my local Mopar parts department this last spring was a doorman part I could have got the exact same for at autozone for half the price. I know, cause I bought both. They are identical.

Jeep dealers parts on older vehicles is basically drying up. The counter guy said they don't want waste time and money to stock anything over 10+ years and that, that number was shrinking soon.

 

IMHO NGK iridium plugs are better than the original Champion Iridium plugs. I had an issue with the replacement Champions on a couple of cylinders which went away with the NGK's.

 

RockAuto has them for $13.29 but you would have to pay shipping