Additional information....it seems to fit the plastic holder on the left side of the automatic transmission near the drive axle flange. The vehicle speed sensor is on the right-hand side of the transmission.
After searching the web, I discovered that this part is the speed sensor that fits into a holder near the left side transmission drive flange. The ETKA part number for the speed sensor assembly is 01F-409-191. The part number that I have is 012-409-191D, but the ....9-191D was unreadable, so I had difficulty tracking it down. Anyway, if you connect an ohmmeter to the two terminals and move a magnet near the stem, the resistance will change from high to near zero. So, the sensor must be a magnetic reed switch?