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Who needs a Hemi
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I want to know if the autolite 3923's are as good as everyone says. Ever since I have owned my R/T I have read alot about these plugs. Are they the best? I would like to hear from you guys that have been running them. Or should I stick with stock plugs? Thanks
 

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I switched to a new plug about 10k miles ago, and boy are they proud of these. They are made by denso. Denso Iridium is the name of them. They retail for $12.99 each, but I think they are worth it. I have noticed a difference in idling, especially at a stand still since replacing these. Iridium has a higher melting point than nickel and platinum too. Worth a shot if you want to be out an extra $100.00. If not...the autolites are a good choice.

http://www.denso.co.jp/PLUG/iridium-e/
 

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i dont have an rt but i have a 5.9 and im really happy with the autolites.
 
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