biker349

2004 cl600. i know some members recommend the ngk iridium plugs, but are the stock mercedes plugs you purchase at the dealership copper, platinum, or iridium? i know they list for $19 each, local dealer wants $24, and i can get them on line for $10.15. what material are these stock plugs made out of? also should i purchase 24 connectors for the spark plugs as well, or what is your suggestions?

thanks

awiner

Replied in the CL55/CL65 forum.