cooling fan after run switch part number(s)

[Jan Pinkowish]

ETKA lists the 4kq cooling fan after run switch part # as 034 919 369 and describes it as a 90 degC switch.  This is the switch mounted on the rear of the cylinder head near the battery.

The vendor sends me a part with # 443 959 481 in a bag with a label that says "switch thermo after-run 4k, 80, 90".  ETKA lists this as a 50/40 degC switch for the 5k series.  It appears this switch measures the coolant flowing to the heater core and provides a signal to the A/C controller.

The vendor proclaims ignorance and says their catalog lists the 443 959 481 switch as the 4kq after run fan switch.

Has anyone used the 443 switch as a replacement for the 034 switch?  To me, they are completely different.  The 034 switch is an "on/off", while the 443 switch has some hysteresis in it.

Comments?

Jan Pinkowish