I'm the original owner of 2003 g35 coupe, 6MT. I'm doing maintenance and like to change my spark plugs. Anyone with recommendations on which type and deals out there? Thanks everyone for all your help.

 

Look on eBay for NGKs iridium spark plugs. That's what I just went with
Got mine for $40

 

X2 ok the eBay iridium ix plugs. I don't think you'll find them any cheaper. http://bit.ly/19YNdTd

 

what the difference between the ebay and the dealership. you could buy the oem for $65 at the dealership.

 

Only NGK. It is the best money can buy.

 

do you regularly race your car? if not, i would just use the OEM NGK's... those things work and last a longgggggg time.

 

my OEM plugs were **** at 50K.

Running LFR6AIX-11 right now.

 

whats the difference between the 5aix and 6aix?

 

5 is stock heat range, 6 is one step colder. Go with the 6

 

My vote goes to Denso plugs. Denso > NGK. Even the packaging of Denso products is superior. Plastic plug protectors for the Denso plugs, vs Cardboard for the NGK plugs. Make sure you use the Iridium Long Life plugs, not the performance ones. Not all iridium plugs are rated for long life - some are only designed for 30k miles use.

 

laser platinum