I searched. Came up with the NGK ones, & the Denso ones. Which are correct for the 6 speed, & anyone have a part #?

 

Why would the 6spd have diffrent spark plugs?

 

That's what I've heard. Hence the confusion.

 

Aren't there a number of parts different for the 6-speed (vs. automatic)?

 

Dont know why but the 6 speed gets denso iridiums from the factory and the automatics get NGK platinums...like I said I have no clue why???

 

Cut and pasted from Acura's TQI (dealer prep sheet) for MY2003 CL

 

I changed mine to Colder Densos b/c of FI

 

What I use now is in my sig

 

I'll have the official part no. and such up in the AM .

Jens

 

Hi ,

NGK IZFR6K11

Acura part no. 9807B-5617W

Used on 6MT 03 CL/S ,RSX Automatic ,04 TL

Jens

 

Thanks Jens!

Are those the OEM ones?

What plugs are better if any? The Denso iridiums, or the NGK ones?

 

Yes they are OEM .I have no opinion on the plugs as to which is better .To be honest I have never seen any measurable difference in performance despite a number of subjective ones posted here in the past .The only time a plug change would be recommended in my eyes would be to accomodate a forced induction set in which case a colder plug is good .CT supplies plugs with it's blower .

Jens