a little confused: what's the best ngk plug for a 2004 corolla?

[ofogao]

I'm down in ohio for business and want to pick up some plugs for
my 2004 corolla.

What exactly are the best ngk plugs?

A model number would help.

Thanks

[sila649]

NGK Iridium IXs are good spark plugs. And according to the 2004 owner's guide, they recommend the an Iridium Plug. It comes with 3 years warranty, i just replaced all four 3 days ago and it works fine for me.

[saskrider]

I will replace them tomorrow with Iridium BKR5EIX-11, that is the replacement and do not have to change for a long time...

[invader]

My NGK Iridium IX BKR5EIX-11 (5464) plugs (φ 0.6 mm iridium alloy center electrode) were good for the 90,000 miles that I used them, although the ground electrodes had worn down enough to increase gap from 1.1 to about 1.25 mm... My actual Bosch Platinum-Ir Fusion plugs are running exeptionally well. Its four yttrium-enhanced ground electrode design with exclusive surface air gap firing technology produce a longer, more powerful spark. They outperform OE iridium plugs by significantly reducing gap wear. Voltage requirement increases less over time than other iridium plugs. This results in less stress on the ignition system for quicker starts, more efficient fuel combustion, and a longer performance life.

http://www.boschautoparts.com/sparkp...mIrFusion.aspx

Original standard plugs are Denso's Iridium Long-Life SK16R11 (φ 0.7 mm iridium alloy center electrode) with platinum coated ground electrode.
You can upgrade to Denso Iridium Power IK16 (φ 0.4 mm iridium alloy center electrode) with taper-cut U-groove ground electrode, or Denso Iridium Tough VK16 (φ 0.4 mm iridium alloy center electrode) with platinum tipped ground electrode. Quality is a bit better than NGK... They're all pre-gapped to 1.1 mm (0.0433"), as required.

http://www.globaldenso.com/en/produc...structure.html
http://www.globaldenso.com/en/produc...structure.html

http://www.ebay.com/itm/1-New-DENSO-...item2568346326
http://global.rakuten.com/en/store/a...em/v91105603c/

[expertmax]

The dealer recommends NGK IFR5A11. They are not Iridum and it's good that way because if you put Iridum on your car, they will not make the car run better and they will not last longer. They make Iridum spark plugs for cars that needs them ! So buy the IFR5A11 and you will be good to go !

[invader]

"The" dealer?
Original standard plugs are Denso's Iridium Long-Life SK16R11 (φ 0.7 mm iridium alloy center electrode) with platinum coated ground electrode. Toyota recommends replacing at 120000 mile intervals with iridium spark plugs which offer less firing resistance for less strain on direct ignition coils, also a longer service life and fewer misfires for reduced stress on catalytic converter.

[ofogao]

Thanks for everyone's help