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Tiara Coronet 6.0l Captains Choice - Spark Plugs
#1
2012 - 3100 Coronet 
6.0L Crusader Captains Choice

Having a hard time trying to find what the original AC Delco - Double Platinum spark plugs are and what is the Iridium replacement?

I tried several auto parts stores and have been scouring the Web, not getting much luck…

Appreciate the help!
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