Product review (5 stars): Stock Replacement for blower in LG Dishwasher, LDF7932ST
My LG DLF7932ST dishwasher was leaking water from the lower left hand corner which is the blower exhaust vent.  Apparently, the actuator that closes the vent port had failed.  I ordered this part as an OEM replacement (The unit came with the O-ring gasket).  It was a good price, and took about a week for delivery.  The installation is pretty simple--search: Help! My LG Dishwasher LDF6920ST Is Leaking Water, for a blog with picture instructions.  The unit was an exact match, and fixed the leak.