NGK Iridium IX plugs (stock and 1 step colder) for $5.99 on sale
 

Advance Auto Parts Online has the NGK Iridium IX, in heat range 9 and in heat range 8 (step colder?) for $5.99 online right now. That seems absurdly cheap to me. Is this correct? Part numbers 2669 and 2668. Here's the listing...

Spark Plug by NGK - Part 2669 - Advance Auto Parts

Click on the "Specifications" tab down towards the bottom for the specs.

On other websites these things are crazy expensive. Even at the AAP brick and motor stores in my area they don't have them at all and they have to special order them and they are 4 times as much.

So that leaves me wondering... are these the right plugs? Something seems wrong.

i posted in the thread where you asked this question.
ngk for step colder on ms3 is part 6510.
idk if the ones you're asking about are the same, but judging by part number, they are not.

Thanks. Curious as to what these are then. They show correct for the Speed 3 and the specifications tab says they are Iridium IX (are those good ones?). Do you know where I could see the specs of the ones you mention? I'm not really looking for step colder though.

you know...those might be the stock...coldness...
i'm not sure.
you can get 6510's at napa.
Store Locator | NAPA Online

does look like the have stock ngks though. just autolite and a few others.