According to Fastlane either Bosch H 9 DCO or H 9 DC are right for your car ask Phil if your unsure. Old MB engine's don't like platinum plugs they were not designed to use them. I bet your car would run better with copper plugs.

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200