Thread: SRT6 Iridium Spark Plug Sizes
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Old Aug 12, 2012 | 02:08 PM
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jiggityjosh
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Default Re: SRT6 Iridium Spark Plug Sizes
Originally Posted by Mimi05SRT6
IK20 would be for the stock SRT-6. The IK22's are only 1 step colder.
That's weird, every single site I have gone too say's IK16 for stock SRT-6 as well as the CLK320...

Here, even Denso say's IK16 are stock!!!

Denso automotive parts available online at DensoProducts.com
 
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