Hi,
Im planning to buy NGK Iridium spark plugs for my 2001 CL-S and I was wondering which part number is the right to get and what is the difference between them. I see people reccomending NGK BKR6EIX-11 but on their web site is NGK ZFR5FIX-11 for my car.

Which one should get? What the difference?

Thanks

 

you need the ZFR5FIX-11 like the NGK site says.

 

But even in the Acura CL FAQ they recommend NGK BKR6EIX-11
http://www.geocities.com/gamesmgr/chod/acura/#Engine3

 

I went with the ZFR6FIX-11

The ZFR5FIX-11's are for the CL-P (Premium)

 

http://ngk.com/results_fitment.asp?pid=BKR6EIX%2D11

those are the applications for that plug - only for the Integra, NSX and Legend. Get the one the NGK site says too.

 

why did you go with that one??? they only go with the '95 and '96 Legend...

http://ngk.com/results_fitment.asp?pid=ZFR6FIX%2D11

The ZFR5FIX-11's are for the TLP, TLS, CLP, CLS, MDX...http://ngk.com/results_fitment.asp?pid=ZFR5FIX%2D11

 

How do you like them? Did you notice any difference from stock. I have about 60,000 miles and Im thinking of replacing them.

 

cant really tell a difference, but mine had 80k on them. it was bugging me, so I got the NGK ones because they are only like $7/plug and should last another 100k - so its a good piece of mind job

 

Based on the 2001 Acura Owner's Manual the specified spark plugs are

For the Premium

NGK: PZFR5F-11
Denso: PKJ16CR-L11

For Type S:

NGK: PZFR6F-11
Denso: PKJ20CR-L11

Therefore for a 2001 Type S the recommended Iridium plugs are Denso IK20 or the NGK ZFR6FIX-11