This is the cylinder head Temp Sensor for the fuel injection for 74-79 VW Type 2 (Bus) and 80-83 Air-Cooled Vanagon (see also Bosch 0280130017 or Bosch 0280130012). If you are having a problem with your fuel injection running rich or fouling plugs, I would recommend testing this sensor per the Bentley Manual and replacing it, if you find it to be bad. I finally found a brand new source for these. They are aftermarket (not Bosch) but they are back to being available again.
