NGK IX iridium (OEM spec plug)

[FarFetched]

Double Platinum vs IX Iridium OEM spec spark plugs pros and cons!Thanks!

[elwesso]

Most here recommend the OEM laser platinums.

we know the OEMS work perfect, what else can be expected from plugs?

[DominickJ30]

The Iridium electrode is supposed to last longer than the platinum one. But how long will the threads last in the aluminum head?

Ill let you decide that. I dont plan on having the same plugs for more than 100k so why waste money on iridium?

[FarFetched]

Actually Iridium plugs cost less. I don't get it if iridium is more precious metal than platinum, why is platinum more expensive plug? thanks!

[DAEDALUS]

Plugs have 2 electrodes. The IX iridiums have iridium on the center electrode only; the ground is steel. Factory plugs have platinum on both electrodes. The better IFR5E-11 plugs have iridium on the center and platinum on the ground. But this one costs the same as factory double platinum plugs.

[FarFetched]

I see.Thanks!