Product review (4 stars): Whirlpool front loader water pump
New pump stopped the "F1" error code. Mounted quite well - remember to use the original  O-ring and have plumber's grease and a silicone sealant on hand. Test fit first to know correct orientation. Motor is differently shaped, so I modified the cover to offer some protection from above. Only issue is reusing the circle clip hose bands. I tried standard screw type hose clamps which leaked. Dug out "hog ring" pliers as slip notch pliers didn't quite do it.
Machine runs again without any error codes. I just wish the machine would due it's cycle in the time initially indicated.
The part came in (2) days instead of the indicated 7-10 days. THANK YOU !!!!
The pump can be ordered with the entire plastic trap/ in and out piece. I would go that route next time.