Not if they're Iridium or Platinum.

 

I believe that is the Iridium .. recommended service interval 100,000 miles... Not sure who makes now; it was Champion several years ago and I have not heard of any change. FWIW... Mopar's run best on Mopar plugs.

 

Always use to Be Champion Platinum plugs. I had assumed the 3.6 still used the Champion plugs.
Apparently Champion Iridium is factory equipment.


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The spark plugs that come in the 3.6 engine from the factory are Champion iridium. I have changed my plugs so I am positive they are Champions. I bought the plugs for my 2013 (3.6 engine) from Amazon. They sell a 6 pack of plugs for $51 which comes out to $8.50 per plug. https://www.amazon.com/dp/B07LH8QZ1R/?coliid=I19PRGX5Z0LTWD&colid=399YPFG70MR7J&psc=1&ref_=lv_ov_lig_dp_it

 

I wouldn't buy my plugs from Amazon. Too many fakes out there. I don't have a link specifically for Mopar but here is one about Motorcraft. I've had fake products before from Amazon.

 

champion iridium, no question

 

I will say this...I am shocked at how long the OEM plugs last. I just bought from my sister for a bang around car my mother's old 2011 Grand Cherokee Limited. 163k on it, 3.6, and my brother-in-law for some reason never changed the plugs in it.

Given how worn they were, I am shocked it ran as well as it did. Definitely peppier now...but shocked he wasn't throwing check engine lights for misfires.

 

That is quite a long time to have the OEM plugs in the engine. I replaced mine at 85,000 miles because I was about to drive from Louisiana to Colorado and back. I just wanted to make that trek with fresh plugs.

 

Champion. Changed mine at 100k. Exactly the same as what I pulled out. Ordered from ROCKAUTO

 

I need to mark my calendar to change my plugs in 2049.

 

Try $25 bux after discounts. Jeezz.

 

I just called Jeep to price out spark plugs and I was told $77.35 a spark plug for my 2018 jeep grand Cherokee. That’s not even remotely close to a fair price.

 

The parts guys didn't read the entire description. That should be for all 6.

 

The Irridium plugs for my Subaru were apx $34 a plug.