While re-installing the valve cover the other day, I broke the copper contact off the sensor installed in the block adjacent to the thermostat housing. I want to replace it, but I don't know what to order. This is -not- the one that sticks out of the housing at an angle toward the right front. It's the one that is vertical, on top. It has a hex machined into it at the base, a round-bottomed groove above that (I think), and a single copper pin sticking up.

Sorry for the poor description. I should have taken a picture. A coolant temperature sensor maybe?

Oh yeah, we are talking about an 85 300SD.

Thanks,
Ray

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1985 300SD, 203,000 miles, dark blue

Lil Sarah says: "Poor old Grandma Blue Car...She's sad."