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Customer Questions and Answers for Top Wash Arm Retainer (Upper Spray Arm) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18043440
Manufacturer Part Number: WP99002753

This top wash arm retainer secures the dishwasher's upper spray arm so it spins freely and stays aligned, helping maintain proper water distribution for upper-rack cleaning. Replace a cracked or worn retainer to reduce wobble and misalignment. What it does:

  • Holds the upper/ top spray arm in place on the spray assembly so the arm can rotate correctly.
  • Prevents the spray arm from slipping or wobbling during the wash cycle.
  • Helps restore proper water spray coverage to the upper rack when the original retainer is broken or worn.
  • Compatible with standard upper spray arm mounting—no modification required.
What's included:
  • Includes: 1 top wash arm retainer
Install notes:
  • Disconnect power to the appliance before beginning any repair.
  • You may need to remove the upper rack and/or the spray arm to access the retainer; keep parts organized for reassembly.
  • Inspect the spray arm and attachment for damage or debris while replacing the retainer.
  • Use hand tools only.

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$5.46
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$6.44
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$0.98

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