2000 GMC Sierra 1500 what ACDelco Iridium Plugs?

Brenden Burnham · December 22, 2021

So have been told by many of you to go with the ACDelco Plugs. I can see there is Double Platinum(AC 41962) But where are the Iridium's for my truck?? I have checked all the parts stores(Napa/AutoZone/Orilly's, etc) and none show the Iridiums that fit my truck 2000 GMC Sierra 4x4 1500 4.8.

When searching I see the ACDelco 41-110 but no where does it show that it will work for my truck. Please help as I want the ACDelco's Iridiums for my truck.

Brenden Burnham · December 22, 2021

I am sure I am right in saying that the 41-110 will work for my 2000 Sierra but want confirmation from you guys. Why has the data not been updated at the parts stores showing this plug works for my truck??

shakenfake · December 22, 2021

I believe that is the correct part number for your truck. I don't know why they say it won't work. If you want an alternative you could go with these NGK 7397 {Click Info Button for Alternate/OEM Part Numbers} Iridium IX

I ran these in my 6.0, yes they fit the 5.3, for a few months before stepping down to a colder plug cause performance engine. Maybe 5k miles? but they worked perfectly.

Brenden Burnham · December 22, 2021

5 minutes ago, shakenfake said:

I believe that is the correct part number for your truck. I don't know why they say it won't work. If you want an alternative you could go with these NGK 7397 {Click Info Button for Alternate/OEM Part Numbers} Iridium IX

I ran these in my 6.0, yes they fit the 5.3, for a few months before stepping down to a colder plug cause performance engine. Maybe 5k miles? but they worked perfectly.

Did not specifically ask them but when using the filter to fit my truck at all these sites none of them show working with my truck. So just seems that the parts stores were never updated with showing the ACDelco Iridiums working. I did read some reviews stating they work for the same years Silverado's and GMC Sierra's so thats why I know they are fine. Will go with the ACDelco Iridiums 41-110.

Brenden Burnham · December 22, 2021

10 minutes ago, shakenfake said:

I believe that is the correct part number for your truck. I don't know why they say it won't work. If you want an alternative you could go with these NGK 7397 {Click Info Button for Alternate/OEM Part Numbers} Iridium IX

I ran these in my 6.0, yes they fit the 5.3, for a few months before stepping down to a colder plug cause performance engine. Maybe 5k miles? but they worked perfectly.

Oh I have the 4.8 Engine. Should not matter right?

newdude · December 22, 2021

You should be able to use 12680072/41-110 (which are NGK supplied) or 19417055/41-162 (which are Denso supplied).

shakenfake · December 22, 2021

No doesn't matter

Supreme Pizza · December 22, 2021

This is a little off topic, but still relevant I think. What I can say for sure, is that there are counterfeit spark plug manufacturers. The plugs are cheap copies and they can fall apart inside your engine, cause major damage. I have bought plugs from eBay that turned out to be fakes. I returned them to the seller, rather than installing them. So what ever plugs you get, just make sure that your plugs are genuine before you install them.

Brenden Burnham · December 22, 2021

Thanks guys.

Brenden Burnham · December 22, 2021

2 minutes ago, Supreme Pizza said:

This is a little off topic, but still relevant I think. What I can say for sure, is that there are counterfeit spark plug manufacturers. The plugs are cheap copies and they can fall apart inside your engine, cause major damage. I have bought plugs from eBay that turned out to be fakes. I returned them to the seller, rather than installing them. So what ever plugs you get, just make sure that your plugs are genuine before you install them.

I have actually been reading about that on Amazon and eBay so told myself I am ONLY going to purchase from local parts store. This will ensure that I will not (hopefully) run into that issue. That is one part that I want to be sure is 100% genuine. Thanks for the info.

dna9656 · December 24, 2021

https://parts-catalog.acdelco.com/acesCat.php?#

Is what AC Delco has to say.

I went to AC Delco's web site and keyed in your info.

I say Bosch makes good plugs for any vehicle, BUT in my Metric motorcycles I use NKG always.

The old wisdom AC Delco in GM, Autolite in Fords, and Champions in Mopars still holds true so far as I know. I have used Bosch with good results, as good or better than AC Delco. Just because it's European doesn't necessarily make it better, just different.

Brenden Burnham · December 24, 2021

18 hours ago, dna9656 said:

https://parts-catalog.acdelco.com/acesCat.php?#

Is what AC Delco has to say.

I went to AC Delco's web site and keyed in your info.

I say Bosch makes good plugs for any vehicle, BUT in my Metric motorcycles I use NKG always.

The old wisdom AC Delco in GM, Autolite in Fords, and Champions in Mopars still holds true so far as I know. I have used Bosch with good results, as good or better than AC Delco. Just because it's European doesn't necessarily make it better, just different.

Really Bizzare that AC Delco does not show the 41-110's(Iridiums) when you search by 2000 GMC Sierra 1500 SLT 4.8.

I ended up swapping out the Bosch Platnum's with the ACD's 41-110's(iridiums) and I tell you I noticed right away a difference. Better idle and better throttle response right off the bat. Reason I did was I just was not happy with the Bosch's, rough idle and not as good throttle response. I am not saying Bosch is not a good brand/company they have been around a VERY long time I just feel some products go better with certain applications/vehicles than others. This is one of those situations.

To back to what started all of this, had one spark plug go bad(they were NKG Iridiums that am sure have been in truck for 80-100k(not sure as I bought truck and have had just 10k miles). The NKG's were pretty worn. Just wanted to get back on road so bought Bosch Platinum's. Just was not happy with them. Did research and asked questions and you guys all told me to go to AC Delco. So did and sure am glad that I did.

So for all of you out there on the fence about going with one of the other brands just stick with OEM ACDelco. Just do it.

dna9656 · December 26, 2021

Old school wisdom. The engineers at GM, Ford, or Chrysler are not dummies. If the factory recommends X stay with X.

dna9656 · January 1, 2022

I thought it very weird that AC Delco didn't list a iridium plug for that application, maybe COVID has kept the data base from being updated?

txab · January 2, 2022

On 1/1/2022 at 12:46 PM, dna9656 said:

I thought it very weird that AC Delco didn't list a iridium plug for that application, maybe COVID has kept the data base from being updated?

I figure it's because since iridium is good for around 100k on wear. For a plug change on a high mileage/20 year old vehicle they probably are thinking Platinum or Double Plats are a better way to go. Cheaper also. I'm sure many people won't opt for the higher $ plug. Plus don't forget prior to 2004, iirc, Iridium as not OE. That being said, most catalogs don't show iridium as an option for my 2004 even though they were OE. They push the Plats.

Edited January 3, 2022 by txab