2 different spark plugs ?

[denzel05]

Just changed my plugs out with some denso iridiums, when doing this I noticed the 3 plugs on the drivers side were ngk, and the 3 on passenger side were densos. :hmmmm2: Not only that, but they were gapped completely different. Has anyone else seen this or had it happen to them ?

 

[HiTek21]

Others have had that before, I don't think its too uncommon.

 

[XrunnIT]

ya this is pretty common. Nothing to worry about.

 

[denzel05]

Thanks guys, yeah I'm not to concerned about it, just wondering why Toyota would do that.

 

[MancheX]

Ketchup and I just did our plugs this week, and it was the same with our trucks. they come from the factory like that for some reason.

 

[trd_sport]

Thanks guys, yeah I'm not to concerned about it, just wondering why Toyota would do that.

to make them both happy:dontknow:

 

[DanNolan]

thats bout the best reason, toyota has a contract with 2 companys to supply their spark plugs, so put both into the V6 to avoid causing issues with either one.

my 2.7 has sparks good for 100k miles and all same brand, so haha.

 

[denzel05]

Yeah that sounds like the reason, keep em both satisfied. jeez glad all four tires come the same..

 

[DanNolan]

some dude came up with the reason that each side has a different spacing and so a different brand is needed...but careful measurement of both revealed that to be bull...both sides are identical.

 

[Vince77]

Yep prefectly normal.

I just found this, kinda interesting... http://www.spark-plugs.co.uk/pages/technical/iridium_spark_plugs.htm