Spark plugs on a 01 5.3 engine

ScottyBoy

The LED Man
Apr 6, 2012
1,320
21
38
I'm getting ready to replace the spark plugs on my 01 Chevy 5.3 Suburban.
I have already ordered the AC Delco 41-110 Iridium plugs from Rockauto.
I thought it was odd that they were not listed as a replacement for my truck. I had to manually enter the part number in order to purchase them.
But I have read all over the interwebs that this is the correct factory replacement plug for my engine. But now I am finding mixed info, some sites saying that this is NOT the reccomended plug for this engine now. So what do you guys think?
Should I use them or go with another plug?
 

Fiesty

Active Member
Jul 28, 2013
2,698
13
38
30
Kansas City, MO
prolly because iradiums arent a factory replacement. and they wont add any power. Just get some good platinum plugs, thats what our trucks require.
This.

they dont show as a a replacement on the acdelco site either.

i just went with the ngk plugs. little more expensive, but i didnt mind.
More Information for NGK 7397

NGK is usually cheaper in my experience.

Scott, I use NGK TR55 plugs. Like $1.50 each.
 
Oct 16, 2011
4,621
3
0
SoCal
I'm getting ready to replace the spark plugs on my 01 Chevy 5.3 Suburban.
I have already ordered the AC Delco 41-110 Iridium plugs from Rockauto.
I thought it was odd that they were not listed as a replacement for my truck. I had to manually enter the part number in order to purchase them.
But I have read all over the interwebs that this is the correct factory replacement plug for my engine. But now I am finding mixed info, some sites saying that this is NOT the reccomended plug for this engine now. So what do you guys think?
Should I use them or go with another plug?

i run those...love them...when i removed trhe spark plugs off the LY5 (NNBS moter) I bought, had those same plugs...oem.
 
Last edited:

Jared

Administrator
Feb 8, 2012
20,572
117
63
North Dallas
Delco or NGK is fine...they are also superseded quite often, that may be why.

Is online that much cheaper than auto stores?
 

ScottyBoy

The LED Man
Apr 6, 2012
1,320
21
38
Delco or NGK is fine...they are also superseded quite often, that may be why.

Is online that much cheaper than auto stores?

Yep. Amazon or Rockauto is cheaper than any parts store in town.

The reason I ordered these is because I put these same plugs in my truck back in 2006 when I first bought it. Back then, that's what every "parts store" and website listed as the correct replacement. So I just ordered the same plugs again, but now I'm seeing that they are no longer the recommended plug.
I've ran them for 8 years with no issues, so I guess they should be just fine.
 

ScottyBoy

The LED Man
Apr 6, 2012
1,320
21
38
if you ran them with no issues than they will be fine.

That's pretty much what I figured. But I was also wondering if a differnt plug would perhaps make it run any better or give me more MPGs or anything.

Fuck it, I already got em so I'll just stab em in there I guess. :lol:
 

HackMcMaster

Active Member
Jun 26, 2012
4,758
9
38
Dunes
That's pretty much what I figured. But I was also wondering if a differnt plug would perhaps make it run any better or give me more MPGs or anything.

Fuck it, I already got em so I'll just stab em in there I guess. :lol:
lololol no you aint going to see much change with a damn spark plug, for the most part its either firing or it aint