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Trigger657
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Discussion Starter #1
I would like some input on what is a good spark plug for my SRT8 6.4L. And if you could tell me who would make the best Coil Boots...? Any info appreciated. Tannnks
 

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There's really nothing wrong with the coil boots on the car, and if you go with an after market spark plug make sure it is the copper type so there's no serious resistance difference.
 
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2016 Challenger Scat Pack Shaker
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There's really nothing wrong with the coil boots on the car, and if you go with an after market spark plug make sure it is the copper type so there's no serious resistance difference.
The 6.4 uses other than copper core, just get the Mopar replacement plugs.
 

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The 6.4 uses other than copper core, just get the Mopar replacement plugs.
Thanks for the heads up, I was referring to the 5.7.
 
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All 5.7s don't use the copper either, some use iridium depending on the year model if I'm not mistaken.
Correct, think that started in 2015 maybe a year or two earlier.
 
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