I was replacing the hotend on my v3 SE and I guess I didn’t do a good enough job cutting off the protective melted bit, and I accidentally pulled off the little coupling piece of plastic.
I got it back on, but it’s broken so the cable is not really secured in.
The little plastic female connector piece above “heat”, next to the fan cable. What is the plastic pin piece called so I can look for a replacement.
Appreciated!
More of the plastic sheath that holds it in place.
You pull out the cable, and there’s a plastic sheath that guides it back on to the pins properly and holds it snug. It’s that plastic piece. 
Original Hotend Adapter Plate E3V3-Nozzle PCBA Breakout Module Board Replacement Compatible with Creality Ender 3 V3 SE 3D Printer is available on Amazon UK at around £19.
Wish I could get one for my KE as I have had exactly the same problem. What does not help is that creality have a tendency to use hot glue on these little connectors which makes it almost impossible to pull the connector out without damaging the board.
