Stock spark plugs in a 2012 6.0?

[Summit15101]

Hey guys so I bought a used 2012 6.0 and it has close to 110000 miles on it and I pulled a spark plug out today and it currently has ac Delco 41-110 plugs in it. I am wondering if these are the stock plugs it came with or if they would be the iridium ones from ac delco?

 

 

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[davester]

google tells me that that part number = iridium spark plug.  It also says they are from the "professional" acdelco line, so I don't believe they are original.

[gearheadesw]

That's what was in my truck from the factory,  but 2017 6.0l.

[newdude]

2 hours ago, Summit15101 said:

 

Hey guys so I bought a used 2012 6.0 and it has close to 110000 miles on it and I pulled a spark plug out today and it currently has ac Delco 41-110 plugs in it. I am wondering if these are the stock plugs it came with or if they would be the iridium ones from ac delco? 

 

 

 

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That is the original plug #.  It has since been replaced by 41-162/19417055 for 2007-2014.  2015+up still use the 41-110 as OE and replacement.    

[swathdiver]

Yep, that's the OE plug.  Be wary of counterfeits!  Lots of them out there.

[Summit15101]

Thanks for the info guys. So it is safe to say those would be the original plugs from factory? I don’t want to buy new ones if I don’t need too


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[swathdiver]

7 hours ago, Summit15101 said:

Thanks for the info guys. So it is safe to say those would be the original plugs from factory? I don’t want to buy new ones if I don’t need too


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If those plugs came out of my motor, I would change them AND the wires.  Electrodes look worn, I'd GENTLY check them with a feeler gauge.

[Colossus]

Replace them and the wires, get a good new baseline.