Porsche / VDO  Fuel Gauge Sending unit 

477 919 051B

Up for sale is one Good working 944/924 fuel gauge sender. These very commonly fall apart and drop their silver section into the tank causing loss of fuel gauge function. Usually they will read nothing but empty, though sometimes the gauge or low fuel light may flicker a bit.  This is the flat blad terminal type connection, with 3 pins

Should fit -

This is a good working unit used, with a 30 day functionality warranty.  save yourself about 80% over the new part price here!