Product review (5 stars): This replacement works and allows Samsung engineering to admit they made a dumb mistake without really having to admit it
I have a Samsung Top Loader (WA422PRHDWR) that I bought in 2012. Recently, 2 unruly unbalanced loads finally overcame Samsung's poorly designed (and I would go as far as to say defective design) drain pump and I found water leaking out from under my washing machine. I guess I have to be impressed that their doofus engineering lasted 4 years, but I consider myself lucky after reading other people's experiences with their Samsung washers. To any extent, google searching helped me identify the drain pump as the likely culprit and after taking off the back panel, it was confirmed. It looked like my drain pump suffered a little explosion. It was completely detached from the tub and the plastic casing was all broken up. Installation of the new drain pump and wiring was pretty straight forward though it took me a little longer because I focused too much on pictures on another site trying to make sure I didn't miss anything but ultimately, you're replacing everything that's already there, nothing in addition. The only difference is placement. The new drain pump is installed on the chassis rather than the tub and part of the wiring harness (just the drain pump wires) is rerouted up the inside of the machine frame to the control panel. The easiest way I found to work with everything was to take off the metal back plate, disconnect the grounding wire near the control panel, then take off the control panel cover and disconnect the wiring harness connections and the grounding wire on the control panel. Next, lay the machine on its side and working from the tub (bottom), remove the broken pump, start disconnecting the old wire connections and harness in sections and connecting the new wiring harness as you complete each section. This way, you can be assured that you're installing the new wiring in the same way as the old (with the exception of routing the drain pump wiring up the inside back wall of the machine).

After installation, I ran the cycles a couple of times and watched the tub jerk the flexible drain hose but it seemed to all hold together pretty well and the tub drained with no issues or leaks.

Thank you Samsung for making a better solution but absolutely no thanks for having a faulty design, inadequate quality assurance, overall inferior product (other machine issues like rusting) and making me pay out of pocket for your inadequacies.