Sorry I am sure this has been answered. It has been a little while since I ordered new plugs, and it looks like the part# has changed. Are the NGK colder 1 iridium now "LFR6AIX-11"? I think they used the NGKLFR6A-11. I did a search, and just want to confirm my findings to be safe. What you guys gapping them at? .032 or so? Thanks.

 

only the AIX plugs are iridiums (NGK# 6619). You have coppers (NGK# 3672). Hope you didnt pay iridium prices.

There is no reason to touch the gap unless you have spark blowout from high boost. Bigger gap, better spark, better combustion

the normal LFR6a (without the -11),NGK #6668 are pregapped to 0.035". Not sure why everyone gets the -11(NGK # 3672) and then regaps when NGK sells the proper ones.

 

The .035" ones are special order. I can pick up the -11's from the local store and save myself $10 in shipping.

 

autozone, advanced, napa etc doesnt charge shipping and can usually have next day.

 

I have a set fs in the classifieds.

https://my350z.com/forum/engine/5321...6aix-11-a.html

I'll match the store price shipped.

 

Hello,

We currently still have the LFR6A-11 plugs stock number 3672, and the LFR6AIX-11 is a good iridium option and is a stock number 6619. If you have further questions please feel free to call our tech support at 1-877-473-6767 extension 2.

Thanks for the NGK support.

Have a nice day

Ngk Tech