Which spark plugs for 07 4cyl?
 

07 4cyl auto. I've read where NGK are what I should get. What specific kind, and if you could post a link that would be helpful.

Also, what else should I tune up while I'm at it?

Thanks

It may be either Denso or NGK iridium.

What trim level is your car? Coupe or sedan? Is it California emission or other 49 states?

EX-L sedan... other 49 states.

OEM is either Denso SKJ20DR-M11 or NGK IZFR6K11. Both work fine; no really performance or longevity difference between the two.

Local parts stores, if they carry them are generally still cheaper than online Honda dealers. At local parts stores sometimes around $10 each.

You can verify the part numbers at online Honda dealers like Bernardi Honda Parts, Honda Parts Now, etc.