Product review (5 stars): This was easy, easy
I needed a drain hose longer than six feet, as there is a drawer unit between my dishwasher and the drain under the kitchen sink.  I tried a generic replacement hose first, and I could not get the host to properly seal with the connection under my dishwasher.

The OEM hose works perfectly -- it seals tight under the dishwasher and also to the brass fitting under my kitchen sink that attaches to the drain.

This was easy, easy, easy to do -- no need to call a plumber if you have a phillips screwdriver and a pliers.