Whirlpool Part 481953578121 Upper Spray Arm Hub Home › Forums › Trade Technical & Spare Parts Forums › Trade Spare Parts › Whirlpool Part 481953578121 Upper Spray Arm Hub This topic has 0 replies, 1 voice, and was last updated 19 years ago by roly16. Viewing 1 post (of 1 total) Author Posts March 14, 2007 at 10:41 am #25833 roly16Participant Does anybody have one of these obsolete parts? It’s the upper spray arm bearing hub on an ADP256W. It should be the part that clamps the venturi onto the basket but you can’t see this on Sios as the part isn’t actually shown on the diagram. Thanks Geoff Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In