Product review (5 stars): Solved Clean Water Puddle in Bottom of Machine
Mine came from SupplyEdge.  Was a genuine Bosch part, was well packaged, arrived quickly, and looked identical to the old one I was replacing.  This is a very easy part to install - open door and remove the screws that hold the front panel on (very important to get that out of the way).  Two more screws to lose the kicker panel at the bottom.  Turn water off, disconnect supply hose, remove two screws, holding old valve in.  Disconnect hose and wires from back of old valve, and reverse whole process with new valve, using some teflon tape on the threads.  There are many videos on YouTube for reference.

The problem this solved for me was clean water collecting in the bottom of the machine when the machine was not in use.  The worn out valve was letting water through when not called for.