OnefastTL448

iTrader: (1)

I was wondering what type of spark plugs we have in our cars. I wanted to upgrade to Denso Irridum but not sure what we have stock Does anybody know?

Tried a search had no luck

Thanks

PeterUbers

iTrader: (1)

They already have Denso iridiums in them stock.

OnefastTL448

iTrader: (1)

Thanks for the answer thats what I was not sure about.

Thanks

Road Rage

Here are the plug types from the Helm manual:

NGK: IZFR6K-11
Denso: SKJ20DR-M11

As best I can tell, the tips may be iridium, but the rest of the plug may not be designed exactly like the IK's.

I doubt there is any advantage to swapping to different plugs, which is what Peter Ubers was getting at I think - the car comes with fine plugs.

Unless Denso has gone to a completely new numbering scheme, I question whether Denso Iridium's (Iridia?) are in our cars. The Iridium I have seen all have letter schemes like IK-20, IK-22, IK-24, etc. I use IK-24's in my S2000, which is one level cooler than the stock plugs, which were platinum. But I also spend a fair amount of time in 8000 RPM land, so even slight misfiring is to be avoided.

The 2003 TL's have IK-16 listed at the Denso site.