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

[gtrslngrchris]

If you had not said "all", you would have gotten away with it. Your Duramax could be the first spark plug Duramax diesel. NGK works too.

Damn, you definitely got me there!

 

[OR VietVet]

Damn, you definitely got me there!

Some people think I don't read these posts completely. But I Do.

 

[homesick]

Some people think I don't read these posts completely. But I Do.

Reading for comprehension. What a concept.

joe

 

[Pushrodisbetter]

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.