Product review (4 stars): Not quite an exact replacement for a Whirlpool 383957
I spent over an hour looking up replacement pump part numbers to replace my older Whirlpool washing machine pump that had seized,  The LP115 was listed in numerous places as the replacement part.  When I went to put it in, the bolt holes were about 1/16 inch off and the bolts wouldn't thread into the transmission housing.  I took a round file and carefully made the holes oblong just enough to make it fit; the mounting bosses on the replacement pump are very flimsy compared to the original pump.  To somewhat compensate for the loss of metal from filing out the holes, I put some fairly thick washers under the bolt heads to spread out the forces a bit.  Altogether the new pump was not as sturdy as the original; I guess that's progress, but for $20 and the fact that I needed it, it will have to do.  It doesn't leak and the pulley lined up with the belt, both of which are important.  I'll update this if the pump doesn't perform to my satisfaction.