So I tried ordering NGK Iridium plugs and the guy called and said they are one step colder?(no idea)....And he took them off the order. This is where I ordered from
http://www.customcarscentral.com/mak...ark-plugs.html

Anyone reccomend any Iridium plugs they have had success with?

 

I think I am going to try Denso IK16 Plugs (5303)

 

Weird...Guess they don't need your business

Here a sample blog on plugs, seem alot of people are using the NGK + Denso Iridium plugs
https://www.scionlife.com/forums/sho...d.php?t=127209

I'm still using the regular dealer plugs for my xB + xA cause I have some freebies. Thank you Scion.

Good Luck.....

 

I like the Denso had great success with them

 

Denso Iridium, they last forever!

 

 

So I should look for ones with gap .044...i have an '05...They actually shipped the NGK ones.. http://www.customcarscentral.com/ngk...-scion-xb.html is what I recieved. Should these be fine? On the site it says they are for an '03 and it does say "Heat-range number" which I have no clue what it means but the guy did say the plugs I ordered were for colder level engines? if you cant tell I am not the smartest with vehicles so thanks for the help

 

The car manual recommends .032 gap.
Read this whole blog to see the reason .032 gap Vs. .044 gap
Did you not read ?? https://www.scionlife.com/forums/showthread.php?t=127209. This was to help you make a educational guess on the proper gap for your needs + the correct pre gap NKG spark plug part# to order for your use. Remember after reading the blog, if you have the .044 gap u will need to periodically now need to recheck the gap on your plugs for they may wear quicker.
Good Luck