Yes, but that doesn't mean longer life. The Denso 0.7mm and the NGK 0.7mm should both go over 100k service life (probably should be changed around 60-70k for best gas mileage.....I can confirm this on my Honda which uses those 0.7mm iridium plugs stock and at around 75k miles, I can tell the plugs need to be replaced badly.....and I already regapped them at 40k miles too), but only if you really push them. Lifetime spark plugs are about as ficticious as a lifetime fuel filter IMHO.

 

understood... the o'reily's didnt have the ngk irridiums in stock so it looks like regular denso's for me! haha

 

If you couldn't get the NGK's cheap then I'd just stick to the OEM Denso plug, they're super cheap and they work.

 

[QUOTE=MTL_4runner;50433020]If you couldn't get the NGK's cheap then I'd just stick to the OEM Denso plug, they're super cheap and they work.[/QU






either one is fine with me.. the only thing is since i drive lots of miles i was researching and trying to figure out if irridiums are the way to go but hell i dont mind changing plugs out every 30-40k miles... its my first time changing these plugs so this ought to be interesting. never had coil packs to remove or anything. (had jeeps for a long time) first toyota

 

Piece of cake, you'll have it down in no time.
http://www.4x4wire.com/toyota/mainte...ep3.html#plugs

 

if you go to partsamerica.com they are the parent website of Advance Auto Parts, Checker Auto Parts, Schuck?s Auto Supply and Kragen Auto Parts.

Then you can see if one of those local stores have what you want in stock in my area its 6.99 for the NGK iridiums

I picked mine up today oh also i got to see the Kragen ad for next month and it might be a typo but it said that those exact plugs are going to be 1.99 it was on a full page ad that the store manager left out on the counter she took the ad out of my hands saying that i wasn't suppose to see it and that it was for next month.