Product review (5 stars): Cost effective, simple repair!
My 15 year old washer started leaking during wash cycles.  I thought it may have been leaking during the agitation cycle, but was never able to pin it down.  I watched a few videos online to see how to tear down my machine to get to the tub basin seal, but once I flipped my model over, none of those vids applied.  This looked to be about the only user replaceable part, so I rolled the dice and I'm satisfied with that gamble.  For 20 bucks I am washing clothes again with no leaks and hope to get another 10 years from my ol trusty Whirlpool.  I had to use a 1/2 inch socket to remove three bolts from the washer motor securing it to the tub frame, the pump is held in place by spring clips that are removable by hand.  You will also need either herculean strength or pliers to squeeze the clamps on the drain hoses.  Had I not disassembled (unnecessarily) my whole machine, I could've replaced this pump in less than 15 minutes.