ive been searching for spark plugs for my IX and at the NGK website http://www.ngksparkplugs.com/part_fi...uv/results.asp it has two different plugs or the Evo IX, anyone one know which one is the "correct" one or are both ok to use?

one of them being ILFR7H
the other one is PGR7A

 

ILFR7H, it says it on the spark plug fyi if you've never pulled them out i use denso's if you do a search you can find the part number i believe its ikh24 but search

 

Actually I run the Denso Iridiums too.But the IKH 24 is one step colder
in the heat range.The stock heat range for the OEM NGK plugs is 22.
If the motor is making 75 to 100+hp more than stock,the one step colder plug
heat range is always recommended. Also the stock ILFR7H NGK plugs are way over priced. If motor is lightly modded IKH 22 Denso Iridiums is fine.
FYI the NGK Iridium center electrode width is 0.7mm where as the Denso is only 0.4mm which translates into an easier firing more efficient plug.

Cheers

 

Are the IK24s the same length as the stocks? I haven't been able to find any that are the same length. I just went ahead and bought the ILFR7Hs.

 

Yeah the Denso Iridium IKH 24 have the exact same dimensions
as the OEM NGK plugs. But depending on the type of modifications the IKH 22
plugs are fine for most applications.They are available from sparkplugs.com

Later

 

i think this is the 4 - 5th eo ix plug thread ive seen, search

damn noobs, have the intellect of a piece of cardboard...

 

i did search and all i could come up with was ILFR7H, then i came across the other plug that was supposedly available for our cars and decided to ask. i dont see a prob with that.

 

BPRSearchES

 

they dont work on IXs