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Customer Questions and Answers for Lower Spray Arm Assembly (With Shield) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18036831
Manufacturer Part Number: WP8268874

This lower spray arm assembly circulates wash water from the pump to clean dishes on the lower rack. The integrated shield helps direct water flow and protect the arm from debris, restoring consistent wash coverage.

  • Distributes high-pressure water across the lower rack for effective cleaning
  • Shield design helps prevent debris intrusion and improves spray pattern
  • Common failure signs: poor lower-rack cleaning, noisy or restricted rotation, cracked or warped arm, clogged spray holes
  • Also addresses leaking or splashing caused by a damaged or misaligned arm/shield
What's included: One lower spray arm with attached shield Install notes:
  • Disconnect power and turn off water supply before servicing
  • Remove lower rack; lift off old arm assembly per model design
  • Clear any debris from pump outlet and sump before installing
  • Ensure the new arm spins freely and is fully seated; test for smooth rotation

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$70.76
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Questions & Answers

For Whirlpool Lower Spray Arm Assembly (With Shield) (Part Number: OEM18036831)

1 Answer

Hello David! The parts that go along with this spray arm is the nylon radial bearing WP9742946, the nut WP8268873, and at the bottom there is a seal WP3376846. Hope this helps you determine which part is needed. Thanks!

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1 Answer

Hello Jimmie. We will need to know where the part was found and what it looks like. Thanks you.

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1 Answer

Hi Jean. Are you talking about the lower spray arm? There is a split washer bearing with a lip on one side that goes on first. Then the lower spray arm with plate. Then there is the washer with the larger flat lip on top of that. Then the top nut. The Middle spray arm tube has the split washer on the top side. Then the middle wash arm. Then the rack clip assembly with a center pin on top. The screw goes into the bottom of all of this once it is clipped onto the rack. Thank you.

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1 Answer

Hello Ron. To remove this arm you unscrew the cap in the top center of the arm. This should allow you to lift the old sprayarm off the base of the tub. I hope this info helps.

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