Spark plug mazda 3 1.6

I DON'T KNOW MOST PLATINUM AND IRIDIUM PLUGS HAVE FACTORY GAP AND SHOULD NOT BE CHANGED.
ENTER VEHICLE DETAILS HERE
https://www.amazon.com/ACDelco-41-988-Professional-Iridium-Spark-x/dp/B000C9S402

This would equivalent to OEM
Iridium spark plug
Bosch part #9614 around 6.99 each

You can run other Bosch plugs from copper and up but you car calls for the iridium plugs hope this helps..
Dennis.....

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As far as I know, iridium spark plugs are built to run 100,000 miles. They were made for hard to install cars, like minivans and some new cars like the Nissan Versa.
I wouldn't recommend it, since it will do the same job as the platinum spark plugs, plus you'll be saving a ton of cash, iridium spark plugs could go up as $34.00 each.

I would not spend that kind of money on spark plugs

Just install double platinum

Do not install Bosch with the silly 4 prongs etc
they won't work in some motors

Stay with the OE electrode shape

Spark plugs will make no difference what so ever
as to upgrading to Iridium

Modern spark ;ugs can easily go 50,000 miles. If you think you need new plugs, go ahead and change them out. It certainly wouldn't hurt, and it might give your horsepower and fuel mileage a little boost. I would recommend using Iridium spark plugs from either NGK or Autolite. Personally, I use E3 spark plugs. They did wonders for my old '96 4.3 GM V--6. I would also invest in a premium set of spark plug wires, Don't scrimp on the wires, they are a vital link in the ignition system. A cheap set of plug wires can cause multiple misfires which would play havoc with the on board computer.

IF YOU HAVE STANDARD SPARK PLUGS REPLACE THEM AT 30000 MILES. IF YOU HAVE IRIDIUM SPARK PLUGS REPLACE THEM AT 105000 MILES. IF YOU HAVE PLATINUM SPARK PLUGS REPLACE THEM AT 60000 MILES.

KIA is a korean auto. most asian cars recommend nippondenso (also known as NGK) spark plugs. at their site they show 3 plugs available for your car. standard plug number W16EPR-U11, platinum plug number P16PR11, and iridium power plug number IW16, all with a gap of 0.044. standard will do. platinum is better performance. iridium is extremely long life. they go up in price accordingly. use dielectric jell on the plugs shaft to make removal of wires easier next time and to prevent moisture, and anti-sieze compound to the threads of plugs to keep them from seizing in the block and easier to remove next time. I got this info at nippondenso's website here: http://www.globaldenso.com/cgi-bin/global/plug/usa/4w/4w-plug.cgi?name=OPTIMA&filename=4w-34.txt&action=search

misfire only comes from the coil packs.. replace them

these will work
Spark Plug Part No. Stock No. Plug Gap Photo V-Power TR5 2238 .040 G-Power Platinum TR5GP 3186 .040 Laser Platinum PTR5D-10 * 3784 .040 n/a OE Laser Iridium ITR5F13 ^ 6044 .040 n/a Iridium IX TR5IX 7397 .040