Temperature Sensor

[ivenos]

Hi everybody

can someone please tell me the official spairpart number of the sensor with the blue cover that stands at the top of the motor and gives signals to the motronic box abou tthe temperature of the engine.
I want to order one and i need to know this number.
My car is a 535 e34 from 1988 and has the old M30 engine.
Does anyone know how many Kilo ohms must it be when you take a measurement?

thanks in advance