What's the best after-market spark plugs for my 2 dr JK ?

 

From my past experiance I'd keep with the O.E. Brand Plugs.

 

I agree. There more than enough

 

Champion Double-Platinum Power Spark Plug

Jeep jk oem spark plugs pn s3re14plp5

fit 2007 to 2011 jk's with 3.8

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Jeep OEM. I have run many different kinds and did not see any difference. Unless to are changing your timing curve (using a programmer) or running a supercharger I would stay with OEM. I use OEM and I have modified the ECM programming. Save the money and get a cold air intake. You won’t be sorry.

 

Thanks for you valuable comment, I actually did the programing and got the MSD wiring.

 

Any tips on getting to the passenger side plugs???
Just checked my drivers side plugs for the first time in 40,000 miles.
They look ok, all were light tan but the electrode is worn down so a new set of OEM plugs is probobly a good idea.

 

I have heard a lot of people complain about the E3 spark plug in the 3.8. Now that the 12’s have a new engine does anyone know how they work in the Pentastar. If anyone has a friend that has a mopar vehicle with the Pentastar engine and E3 plugs that would be a good resource to.

 

O.E. plugs work as well as anything else, not much more we can get out of our mini-van motors.

 

Take your fender liner out. Makes getting to the plugs WAY easier.