I was also wondering what happens when you need to replace the hose side. I guess I'll do what you did when the time comes.
I'm new on forum and recently replaced the intake manifold side of the quick disconnect fitting. Mine was leaking slightly. Fortunately the old fitting came out with no problems. I had heard the horror stories of broken fittings, backing out / digging out the old threads, etc. No problem for me so far.
I hope I'm not hijacking the thread but I'd like to ask a related question. Why is this type of quick disconnect used? Apparently there are lots of vehicles that use this type of connector based on the variety of sizes I saw on the auto parts shelves.
Is this used to flush the coolant system? If so, is there a kit that snaps in place and provides a water hose connection to flush the system?
Inquiring minds want to know.