On the inside of my dishwasher is a plastic tube that transports water to a spinning piece in order to clean the upper rack.

Part of the plastic tube has melted through and the top rack is no longer getting properly clean

Edit: The dishwasher was obtained used and already had the damage when I got it. Based on the way it's melted, something hot came from above, so it's probably not a fault in the appliance itself. It is a Kenmore of some sort, but I currently have a lot more time than money, so I would really prefer to find a DIY solution instead of shopping for OEM parts.
[![enter image description here](https://i.stack.imgur.com/8cHpK.jpg)](https://i.stack.imgur.com/8cHpK.jpg)