Product review (5 stars): OEM Replacement
I changed this in an effort to get my dishwasher to drain.  This turned out not to be the issue, but there was some build up in the old one and this one appears to work just as well.

If your dishwasher is not draining and takes the part DD67-00058A (drain to pump hose), I recommend change this first.  It is much less expensive and this hose has a check valve in it (a small rubber flap).  As it ages, the rubber can be come warped and not seal.  This will lead to the machine not draining.  I changed this and 2 other parts before I made the discovery of the check valve in the hose.

Good luck.