Hey guys i'm fixing to do a tuneup to my 03 H2. I'm getting conflicting information on what plugs and wires to use. I'm wanting to use AC Delco stuff so does anybody have what part numbers I should use for the plugs and wires? I'm coming up with multiple AC Delco numbers and I guess it would be fine to use any of them but I figured I would ask what you guys used.

 

Also any surprises when changing out the plugs and wires on this thing? It looks really straight forward and easy from what I can tell. I also have a little mechanic ability so i'm hoping no issues.

 

Changed my plugs when I bought mine at about 96K. I think they could have been the originals. They were all rusted really bad...but one was about 1/3 rusted away on the outside.....i was so thankful they came out relatively easy..... Putting in new ones was very easy! Very!!!! Get a nice step stool though!

Can't remember what brand I went with. But they sure needed to be changed. Worst looking plugs I have ever seen. They looked frightening on the outside! The electrodes and such looked OK though.

 

I replaced my plus and wires with AC Delco and am happy with the results. Just take your time and pay attention to each plug as it is removed to evidence health.

 

I used A/C Delco 41-110, grabbed them of EBay 8 for $40 something dollars
Then went with these wires, Massive Speed Ignition Wires: MSX90 9mm, another EBay grab, Nice wires $65.00

I have headers so the job is even more a breeze than with stock exhaust. As stated take your time, good stool to stand on, and a little anti-seize does not hurt on the install.

 

I did NGK TR55's. A buddy that builds/races Camaros suggested them to me.
I also used AC Delco wires.

Im thinking of trying different plugs. After the change I am getting the constant random misfire code if I floor the gas for any amount of time. The NGKs may be good for light cars, but maybe not for heavy trucks. IDK.

 

I am not happy, repeat not happy with the Bosch plugs I installed around 65K. I will go back to A/C Delco soon.

Tim

 

Hey guys thanks for all your input. Looking up the AC Delco plugs it says to use part # 41-805 and for plug wires it say for coils stamped 19005218 use part # 9748GG and for coils stamped 12558693 use 9748HH. So im going to look at the coils later so I can get the right wires. I plan on doing the tuneup this weekend so i'll let you all know how it goes. Thanks!

 

Just changed mine at 90k went with ac delco, I ended up breaking one of the plastic ig coils when I removed one of the old wires.I guess I didn't pull straight down enough! I did mine pretty easy I'm 6'3". Didn't have to remove the intake or anything.

 

Trying to get some AC Delco spark plug wire but it says to use part #9748GG for coils stamped 19005218 and use part #9748HH for coils stamped 12558693. I looked at my coils but you can't see or make out any kind of number of the coils. Think i'm just going to buy both sets and return the wrong ones.