Whats the difference in these two??

on rock auto looking for plugs for my 16 Tacoma 3.5 and it showing these two denso plugs for iridium the 16$ ones they only have two in stock, but these other ones look near the same for 10$ and lots in stock...


DENSO 4705 {#9091901249, 9091901263, 9091901279} Iridium TT Info
Gap .040




CAD$10.97
Add to Cart

DENSO 3491 {#9091901263, FK20HBR8} Iridium Long Life (SIP) Info
Gap .032 (Only 2 Remaining)




CAD$16.34
Interior
Steering

 

One is long life the other isn’t. And it appears the gaps are different.

It’s in the description. I believe our Tacoma’s come standard with long life

 

well the long life wont mean much to me as ill prob only have it another year or so. would they be ok to throw in it all the specs are the same only thing i can see different is gap size.

 

Gap

 

Gap is important to have right on spark plugs

 

yes i know the gap is important these two plugs are made for same truck and same motor...

 

If you are getting rid of it, why change plugs? Why changes plugs before 100k miles?

 

im rolling close to 100 and feel a small miss under load.

 

Help me out here.

Why would you replace plugs that most likely do not need replaced on vehicle you don't plan on keeping?

This does not compute.

 

i just said its close to 100 k and i have a small miss,,,,,

 

Ok

Let us know if the missfire goes away.

 

if you have changed plugs on aluminum heads before than disregard this. if not be careful and use anti seize on the new plugs.