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Lower Washarm

Part Number: AP4112900
MFG Part Number: 99001788
Made by: Whirlpool
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$37.90 $12.90

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Questions & Answers

8 Questions & Answers


Color: Gray

Genuine Whirlpool part. Whirlpool brands include Whirlpool, Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and others. See all items in Dishwasher Spray Arm & Related.
Whirlpool also makes various appliance models for Sears / Kenmore.

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Cross Reference Information

Part Number 99001788 (AP4112900) replaces 99001427, 752087, 99001747, AH2099282, EA2099282, PS2099282.

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Clogged dpray arms Charles E. • Goodland, KS • September 19, 2014

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Repair Time Estimate

Less than 15 minutes 

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Repair Video

How to Replace Lower Washarm #99001788

Step by step instructions on how to replace a Lower Washarm #99001788 for Dishwasher made by Maytag, Jenn-Air, Amana. Note: This video is intended to give you the general idea of the part replacement procedure. Your appliance may differ depending on the manufacturer and model.


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Questions & Answers

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Hi, both my washer arms won't rotate. Everything I can find online says there is a clog somewhere and I don't have enough water pressure but motor is good and I seem to have plenty of water pressure. I have disassembled pump/pump housing all the way down and cleaned everything out and can't find any clogs, filter is clean. Both impellers are in good shape. I figure I either need to replace the wash arms or some of the pump housing parts at this point. Any guesses?

Marc for Model Number maytag mdb4030awb


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I had my dishwasher repaired and the lower spray arm was replaced. The replacement part split. According to the repairman there has been an ongoing problem with this part. I've been waiting six weeks for this part and want to know if the problem with the spray arm has been resolved. I'd order the part myself if I knew it would work. Thank you

Richard for Model Number mdb4000awb


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Note: This question is for the older version of this part, but we thought you might still find it helpful

How to remove dishwasher filter under lower spray arm

Barbara for Model Number Maytag dishwasher DWU9202AAB


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Latest Questions

Note: This question is for the older version of this part, but we thought you might still find it helpful

I have same issue, wash arms don't spin during cleaning process but water level is at heating element. Filter is dirty. Could that be the issue?

Mike for Model Number DWU9302AAE


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Hi, Do you need any special tools to remove the wash arm cap AP4114625 Thanks, Vin

Vin for Model Number MDB6000AWA


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The wash arm is clogged and I want to replace, how do I get the old clogged wash arm off?

Glynn L. for Model Number MDB4000AWX


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