Whirlpool Dishwasher sump and motor assembly WPW10482502, Replaces W10300740, W10482502, W10500285

Genuine Whirlpool OEM sump and motor assembly for dishwashers. The assembly circulates wash water through the spray arms and includes the circulation pump and diverter motor; it does not include the drain-pump motor.

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✅ Cross Reference Information

Common Symptoms

• Dishes remain dirty because wash water is not circulating effectively.
• Little or no water movement from the spray arms during the wash portion of the cycle.
• Unusual pump or motor noise during washing.
• Water leaking from the sump and motor assembly area.

Check Before Replacing

• After disconnecting electrical power, inspect the sump, filter area, and pump inlet for visible debris or obstructions.
• Confirm that the spray arms can rotate freely and check for evidence that water is reaching them during a cycle.
• Inspect the pump-and-motor electrical connector and wiring for looseness, corrosion, or visible damage with power disconnected.
• If qualified to perform electrical testing, check the circulation-motor resistance with power disconnected; one service reference specifies approximately 5–15 ohms as a normal range for the motor.

Pro Tip

Part Details

Key Features

• Genuine Whirlpool OEM sump and motor assembly.
• Integrated circulation pump and motor.
• Includes a diverter motor for directing water flow to the spray arms.
• Does not include the separate drain-pump motor.
• Used as a complete sump-and-motor service assembly for applicable dishwasher designs.

Installation Notes

• Disconnect electrical power and water supply before beginning service.
• Replacement may require removing the dishwasher from the installation to access the sump and motor assembly.
• Inspect the mating sump, shaft, seal, and hose connections during installation; replace damaged sealing or clamping components rather than reusing compromised parts.
• Follow the appliance-specific Whirlpool service literature and verify the dishwasher model before ordering or installing the assembly.
• Because incorrect sealing or hose connections can cause leaks, professional installation is advisable if the repair procedure is unfamiliar.

Verified Compatible Models

7WDT790SAYM0, IUD7500BS0, IUD7500BS1, WDF750SAYB0, WDF750SAYB2, WDF750SAYM0, WDF750SAYM2, WDF750SAYW0, WDF750SAYW1, WDF750SAYW2, WDL785SAAM1, WDT790SAYB1, WDT790SAYM1, WDT790SAYW1, WDT790SLYM0

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