I know it's been a few months but I found this topic while searching for info on the part.
The new part number is DC97-10417A
It's called a Silver Care kit or Water Guide.
Mine is cracked, like a lot of others. I may try melting the plastic to see if it will seal but the whole part can be removed and bypassed if you don't use the Silver Care feature of the washer.
Just connect the two larger hoses together and block off the smaller one. Also cover the electrical connectors.