Difference between AC Delco and GM Denso Plugs?

[FATMOE]

Hey guys,

Just bought AC Delco plugs for my LS1 as the seller said these are OR genuines.

Had a look at the ones in mine and they are Denso with a different part number. Is there any difference between the two. I'm under the impression AC Delco make them for Holden right?

 

[hotrod]

they are the main parts supplier for Holden , ngk is better.

 

[ari666]

AC delco are a supplier for chevy that happen to make spark plugs
denso are a japanese company that also make spark plugs
NGK... make spark plugs


there could be any number of differences between your 2 plugs, but without the part numbers that go with them, could be anyones guess.

 

[BoostedDave]

Did you get one of those service packages off eBay, that contains fuel filter, air filter, plugs and what not? I wouldn't worry too much about plugs, as long as they are gapped correctly.... leads on the other hand, genuine for sure...

 

[st3r3otyp3]

Did you get one of those service packages off eBay, that contains fuel filter, air filter, plugs and what not? I wouldn't worry too much about plugs, as long as they are gapped correctly.... leads on the other hand, genuine for sure...

Leads, well OEM ain`t the be all end all either, its all much the muchness as long as they don`t leak and have low ohm`s your golden, I have a set of accels myself, with graphite coated boots :blah blah:that cost me less than oem landed from east coast of the U.S of A.

 

[NU13]

I have a set of MSD 8.5 leads and AC Delco spark plugs in my LS1 and they haven't skipped a beat.