Spark Plugs
#4
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Join Date: Jan 2013
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W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
Unless you have heavily modified the engine and need to run a colder plug, use the stock NGKs (ILZKAR7A10).