That's the right one. If you don't want to deal with water coming out when you remove it, just drain the water below the sensor. To remove it, you need to disconnect the sensor wires from the sensor loom attached to the main circuit board. Use the tab on each side of the sensor loom to remove it from the board. The Temp sensor wires are the top and bottom wires all the way to the right.
Use an undone paperclip or something else small to push the tabs in and they will pull right out. Then just unscrew the old sensor, pull it through, and put the new sensor in the same place. Screw it in and install the wires back into the sensor loom and plug the sensor loom back into the board.
Done :-)
