We have a Whirlpool model ET1MHKXMT01. Apparently an after market top freezer icemaker was installed in unit and had been working fine for years.

New tenants hired a cleaning crew who moved the refrigerator and disconnected a line that runs into the back of the ice maker on the refrigerator. They tried to reconnect it but the line keeps popping out now when ever the ice maker pulls water. A repair guy told me there is some clip missing he can't find anywhere.

I called a parts for whirlpool but hey said the original does not show these parts.

I wondering if that port is part of the fridge or the icemaker? Note a metal ring inside the water line. wondering if these are factory or aftermarket and what fix i can make? do most after market ice makers come with this hardware?