This was indeed my first idea to stop the leakage too. Unfortunatlly, after removing the corrosion it shows both hose fittings are cracked circumferential more than half of the diameter.

Thank you very much for your fast and detailed response.
I hadn't heard of this website before, and I couldn't find it on Google either. It looks like this would be the best option, my recent searches on eBay etc. weren't successful at all.

I am from Germany and drive a 2011 Kizashi AWD with a CVT. At the moment I have a problem with the transmission oil cooler, part number 24931-57L10. The two connectors on this part are corroded right where the hoses end and the vehicle is leaking transmission fluid. Apparently, there is already a di...