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Discussion Starter #1 (Edited)
What sparkplugs is FCA using on the 3.6 from the factory ? They still a mostly Champion shop ? Getting ready to have a tuneup on 14 GC . Rock Auto has Champion Iridiums for $4.61 a piece . The other options are NGK iridium IX $5.61 .
 

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Check under the hood for an emissions label.
 

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I used Champion when replacing mine at 100K (at 146 now). Worked great.
 

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Discussion Starter #4
Check under the hood for an emissions label.
Checked under the hood and the owners manual . they just list some mopar number for the sparkplugs . Rock Auto seems to indicate they are Champion as the
OEM plug .
 

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Checked under the hood and the owners manual . they just list some mopar number for the sparkplugs . Rock Auto seems to indicate they are Champion as the
OEM plug .
What's the Chrysler number?
SP149125AE ?

Chrysler tends to specify either, or both, Champion and NGK.



I would say the CHAMPION 9407 {#RER8ZWYCB4} Iridium is the OE plug per RockAuto site.
 

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Discussion Starter #7
What sparkplugs is FCA using on the 3.6 from the factory ? They still a mostly Champion shop ? Getting ready to have a tuneup on 14 GC . Rock Auto has Champion Iridiums for $4.61 a piece . The other options are NGK iridium IX $5.61 .
Gotta love rock Auto, 2 days and the Champion Iridiums (9407) are here !!
 

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I would go for double platinum or double iridium plugs.

3.6l doesn't need double platinum but double platinum (or double iridium) last longer.
 
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