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

[SFee330]

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!

 

[ihtblzr]

Following as I have same question but 2017 Tahoe. Dealer gave us the 168 but manual says 114

 

[Jake707]

Does anyone know? I just pulled a 41-114 from my ‘17 6.2 that looks like it has all of the 170k miles on it, it is toast. But the local orielleys says the 114 doesn’t fit my vehicle?

I’m hoping new plugs helps with the sort of sputter it has under acceleration.

 

[Tahoe14]

Try Rockauto and type in vehicle information.

 

[OR VietVet]

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!

Sure would help to know if the engine is 5.3 or 6.2. Is it a secret?

RA calls for 41-168 for both engines though. Likely updated plug number. Sometimes the threads count is changed for a different depth in to the cylinder. may be a hotter plug, too.

Please, any member that asks for help with anything, give the vehicle info or put it in the signature so it is there every time you post.

 

[Jake707]

I’m not the original creator but mine is a 6.2. Just looked up rock auto and they list the 168 so maybe something has changed? Not sure what the difference is or if they changed from the 114 to 168. I’ll try calling the local dealer tomorrow when they open and see if they can shed some light

 

[gtrslngrchris]

Do neither and get NGK. No special reason I just like NGK and all my engines like them too.

 

[OR VietVet]

Do neither and get NGK. No special reason I just like NGK and all my engines like them too.

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.

 

[gooffeyguy]

One probably just supercedes the other. My 2012 owners manual says 41-110 but a few years ago all the online parts lookup stated 41-162.

Updated part # probably due to a manufacturer change

 

[Jake707]

For what it’s worth my local dealer confirmed OE is calling for the 168 plug and he “thinks” it superseded the 114 but can’t tell for sure and didn’t know what the difference, if any, would be.

 

[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.

 

[RM250]

For what it’s worth my local dealer confirmed OE is calling for the 168 plug and he “thinks” it superseded the 114 but can’t tell for sure and didn’t know what the difference, if any, would be.

The 168 plugs burn a little hotter than 114, from what I found.