Okay guys I found that the OEM spark plugs for the 2006 Hummer H3 with the 3.5L I5 is the AC Delco 41-981, however I cannot find them anywhere online and I cannot find any reference about whether they were replaced with a new part number or what. Does anyone have any idea about them? I can find the plugs for the 07+ all day long (they are a different part number) but no luck with the ones for the 06 3.5s


Any help would be greatly appreciated

Thanks,
Spencer

 

That would be because you are searching for a no longer existing number????

The AC Delco plug number for the 06 H3 was revised in 2010 to 41-103, gap .043 and now the old plugs are sold out.

All you have to do is go to any auto parts web site (Advance Auto, O'Reilly's, Auto Zone, Pep Boys....) that lets you select a vehicle and then search for spark plugs.

 

You can also go to the AC Delco parts catalog site and search by 06 H3 ACDelco Parts

 

Thanks Doc, I found a thread that listed them all out and they had that number for the 06's and the 41-103 for the 07+ 3.7Ls so I assumed that they were different plugs. Thanks for the help!

 

One 1 AC Delco 41 103 Iridium Spark Plug 12625058 Chevy Buick Oldsmobile GMC | eBay

I bought my plugs off of flebay. Took a couple of days but saved a few buck. Link is above.