I'd just go acdelco for both wires and plugs. Makes it simple and no guessing as to if they are the same. Some guys claim that other plugs work good in the beginning then over time they suck.

 

I couldn't find any ac delco iridium at my local store, so I picked up the NGK iridium. You're right, they are the same plug and they work just as well. You're also right to say that 100k is usually the replacement time (I did mine at 155k, and they were still firing strong, lol) but it's a good idea to pick them up now, and when you get a free couple hours you can enjoy banging your knuckles and replace em!

I don't know anything about the denso plugs, imo if you can get ac delco or NGK, get them. Just a tip, if you have an advance auto parts by you, order online! They often have a $20 off $50 coupon which is a great deal.

 

@19trax95 Yeah that's what i'm thinking, I was just curious I guess lol

@mitchell0715 I actually work at an Advance store haha, but that online deal is a lot better than my employee discount!

 

Well there you go! That $50 off $125 coupon they recently had was awesome, saved a boatload of cash lol. I doubt they'll let you stack your employee discount with a coupon, but it never hurts to try. As you probably already know, calling up the sales center usually yields the best results :lol:

As mentioned, you might want to buy the wires just in case. With your truck not being as old as mine (14 years) it's unlikely that the wires are bad, but it sucks to have one break and not be able to drive it up to the store to get wires, when you can just return them if you dont need em! I actually bought brand new delco wires and my current wires were in great shape, so I just left it alone. If you do get new wires, make sure to read the number off the coil pack to get the right set (you sound pretty knowledgeable, just want to make sure you're good to go when it comes time).

 

I forgot to mention, check rock auto regularly. I got my acdelco wires for near 50% off. They have wholesale closeouts every now and then. They are true acdelco wires and are labeled as such but are a cool redish orange color. They came in a generic plastic bag but are definitely new and genuine.

Same goes for a lot of parts on wholesale discounts. You can't beat the deals they have sometimes.

 

@mitchell0715 Yeah I was scrolling through wires and read "for round coil" and "for square coil" and realized they had different part numbers. Thought that was kinda weird but thank you for clarifying that for me.

@19trax95 Well my truck is red. That would look pretty neat, I'll check it out bud.

 

This is the color.

I'm not sure how to look for the red though. I had no indication the would be anything other than black until they arrived.

 

Stick with ACDELCO for sure

 

I have never changed my plugs or wires but I have read several threads with dozens if not hundreds of posts and the vast majority of opinions seems to favor AC-Delco for both. I only have 24000 on my truck but if I was needing plugs and wires, that would be my choice.
On a side note, how hard is it to remove and replace the plugs on an NNBS with the 5.3L?

 

I haven't looked at a nnbs I a while since my father sold his. But my 2001 was the easiest vehicle I've ever done. Everyone of them is easy to get to except the passenger side rear most plug. That ones not even that bad it's just there is not quite enough room for my huge hands haha.

But I think the engine on the gm trucks sits further forward than most other manufacturers which exposes the plugs better. Where as a dodge for example the engine is pushed back into the firewall quite a bit so they are hard to got at

I got all of mine with a 3/8 ratchet with either a 2" extention or a universal joint, or a combination of the two.

Then I torqued all of them with a small torque wrench with the universal joint on it.

 

Ok. Thanks

 

I installed Denso iR plugs and wire set on my '00 6.0... I must have 50k on them now...
I have used Denso on my last three GM trucks and they do stand the test of time..
I have also used AC Delco iR with similar positive results..
I think your good with either, I would pick from which set of plugs/wires fits your budget...