Spark Plugs - 41-168 vs 41-114 - Which is better?

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Pushrodisbetter

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My owners manual say use 41-114 , but when I search for them 41-168 comes up a lot. 41-168 also fits my Truck... 41-114 is an Iridium plug. Looking for opinions/experience with both. 2019 Tahoe LT. Thanks!
41-168 supersedes 41-114. I called a few dealers when I did the plugs on my 6.2; one or two dealers listed 41-114, but most had 41-168. I put the 168s in mine.
 

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