2014 Tacoma 2.7L spark plugs

So which one of these are for my 2014 Tacoma - 2 Door
Rear wheel drive - 2.7L
Regular cab

 

I went

$54 NGK 6619 Iridium Spark Plugs LFR6AIX-11-6 PCSNEW

NGK 6619 from Anal Zone.

 

But which one of the four I listed ?
Not sure which one is correct….

 

I would contact a parts store first. Or a dealer. Or just go to the dealer.

 

Can’t go wrong at the dealership

 

Owners Manual for my 2013 2.7 indicate SK20HR-A11, which is the 3493. Looking at Denso's data, it doesn't appear to be any different from

$59 SK20HR11 ---- IRIDIUM PLATINUM power pack Spark Plugs -- # 3421 ----- 6 PCS NEW

SK20HR11 (3421)

4704 (

$11 IKH20TT Iridium TT Spark Plug, (Pack of 1)

IKH20TT) is also listed by Denso as a match, the difference listed being it the ground electrode design is "platinum twin-tip"
5344 (IKH20) is also listed by Denso as a match, the difference listed being that the ground electrode design is "tapercut,u-groove"

Although I am not sure, I suspect the difference between the 3493 and 3421 is stock numbers to differentiate between plugs sold through Toyota dealers versus "regular" stock, even though you obiviously can get both in the retail market. If you want to be sure, get the 3493, as it is the A11.