Product review (5 stars): 10 minute fix.
Fit perfectly.  I chose not to remove entire pump assembly...just removed 3 Phillips screws, exchanged pump, and reinstalled screws.  About 10 minutes start to finish.  As mentioned in another review...a new o-ring was installed on replacement pump. The old pump was clearly shot...surprised it lasted as long as it did without failing (still pumped water)...sort of fell apart when I pull it out.  Wiring fit correctly also...no modifications.