How come it looks like there are two of these temp sender switches on my cylinder head. Doesn't it need only one? It says "1 per Car" in the parts haus web site but those two things look exactly alike that are attached to my cylinder head. I think one (or both) are bad because my temp gauge won't go above 60c.

Thanks,
bigmaq

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2009 R350, now the daily driver
1980 300SD, was the daily driver