Casey What is the difference between dishwasher circulation pumps (AP4434021 aka W10239404) and pump (AP4502164 aka W10239401)?
Answer Hello Casey. The difference between the two pumps WPW10757217 and WPW10239401 is the housings. You will need to order the correct one for your model number. Hope this helps. Read More... Answered by AppliancePartsPros.com | Wednesday, December 14, 2011