Product review (5 stars): Removal was pretty quick and reinstallation also went well
I have a Duet Washer purchased in 2006.
There is another 280187 Whirlpool washer pump (currently available at Amazon Prime) that cost less.  Several commenters on that item posted that the angle of the plastic outflow tube on the replacement pump differed from their factory installed washer pump and the commenters had to make adjustments. So  I did not purchase that other 280187.
I wanted to report that this 280187 washer pump is the same configuration as the factory installed washer pump on my 2006 Duet and the angle of the plastic inflow and outflow tubes are identical.  There are several Youtube videos that show step by step install and removal that I used.
The only issue for me:  Removal was pretty quick and reinstallation also went well, however, I had a problem reinstalling the black rubber input hose  to the pump.  The factory installed pump  uses a  round ring clamp that you reuse with the replacement.  You have to squeeze the clamp tabs while pulling the rubber intake tube to the end of the plastic intake nozzle  on the pump.  I used channel locks for a better grip but still could not manipulate the clamp enough  to pressure attach the rubber intake tube over the plastic intake tube.
My solution was to use a hose clamp ($1.39 at the hardware store), similar to what connects the radiator hose on your car to the radiator.  The hose clamp was larger than the diameter of the black rubber hose and the plastic intake tube.  I put the hose clamp at the end of the rubber hose, pulled the rubber hose to the end of the plastic intake tube and then screw tighten the hose clamp.
It was a nice feeling to accomplish this.  I am not a very handy person and was inspired to try this myself after reading the commenters on this
item and other 280187 that I didn't buy.  Best of luck!