biker349

hi, i did a search and although i know it's there i couldn't find it, so what is the proper plug and gap for a 2004 cl600 spark plug? i've found two conflicting threads. one says bosch and one says ngk. i'd like to know opinions, plugs # and proper gap.
thanks

biker349

any help?

mf219

wish I could help you. I've found the parts department at the local dealership to be pretty helpful with this type of info- they can look it up. I would just buy the plugs there and inquire as to the correct gap. If you don't have one nearby, just call any dealership. They never ask where I'm calling from, only the VIN number of the car, so have that handy.

awiner

I'd use a NGK Spark plug # IFR6Q-G for your CL600 (24 of them!) Gap if memory serves me right is in the .032 - check with your service dept to be sure.


Bosch and NGK are both suppliers to Mercedes. My OE plugs on my AMG CL were NGK.

biker349

thanks for the response. i've read gap of 27 and 30. can anyone confirm proper gap and also feedback on the bosch plugs.
thanks