W124

300D 2.5 1991

n/a

300D 2,5 1991.

I have purchased a thermostat from Mercedessource and have flushed the cooling system. My service manual states that the thermostat body and thermostat for a turbo model must have a green mark. The Behr thermostat I removed has a green centre pin. The replacement one does not. What does the green pin on the thermostat mean. Also you show somewhere how to drill modify a new thermostat. Can you post a link to this.
Thanks in advance.

Max

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