Whirlpool Dishwasher Lower spray arm assembly WPW10330588

Genuine Whirlpool OEM lower dishwasher spray arm assembly that rotates and distributes wash water inside the tub.

Is This the Right Part?

Common Symptoms

• Poor cleaning performance
• Water leaking from the lower door area when the spray arm is damaged or misdirected

Check Before Replacing

• Inspect the lower spray arm for cracks, warping, blockage, or damage.
• Confirm that the spray arm rotates freely and that its spray openings are not obstructed.
• Verify the appliance model number before ordering because fit varies by dishwasher model.

Pro Tip

Part Details

Key Features

• Genuine Whirlpool OEM part
• Lower wash-arm position
• Dishwasher application
• Rotating spray-arm design

Installation Notes

• Disconnect electrical power before servicing the dishwasher.
• Wear protective work gloves when handling the spray arm.
• Follow the dishwasher-specific service instructions for removing and securing the lower spray arm.

Verified Compatible Models

MDB4409PAB0, MDB4409PAB1, MDB4409PAB2, MDB4409PAS0, MDB4409PAS1, MDB4409PAS2, MDB4409PAW0, MDB4409PAW1, MDB4409PAW2, MDB4630AWB0, MDB4630AWB1, MDB4630AWB2, MDB4630AWB3, MDB4630AWB4, MDB7759SAS4, MDB4630AWB5, MDB4630AWS0, MDB4630AWS1, MDB4630AWS2, MDB4630AWS3, MDB4630AWS4, MDB4630AWS5, MDB4630AWW0, MDB4630AWW1, MDB4630AWW2, MDB4630AWW3, MDB4630AWW4, MDB4630AWW5, MDB4709AWB1, MDB4709AWB2

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.