[Lifetime Warranty] DC31-00178A PX3516-01 WA52M7750AV/A4 Washer Drain Pump Motor For Samsung, Whirlpool Washers WA50K8600AW WA48J7770AW WA50K8600AV WF42H5000AW/A2 WF42H5000AW/A2-00 WF42H5000AW/A2-01
Replacement drain pump motor for Samsung and Whirlpool washers, part number DC31-00178A.
DC31-00178A washer drain pump motor showing dimensions and wide brand compatibility.
Graphic showing Samsung and Whirlpool washer symptoms fixed by DC31-00178A drain pump motor including noise and leaking.
DC31-00178A washer drain pump motor replacement part for Samsung and Whirlpool washing machines.
DC31-00178A washer drain pump motor for Samsung and Whirlpool washing machines, close-up view of pump assembly.
BlueStars technician performing DIY repair on a Samsung washer for drain pump motor maintenance.
Replacement drain pump motor for Samsung and Whirlpool washers, part number DC31-00178A.
DC31-00178A washer drain pump motor showing dimensions and wide brand compatibility.
Graphic showing Samsung and Whirlpool washer symptoms fixed by DC31-00178A drain pump motor including noise and leaking.
DC31-00178A washer drain pump motor replacement part for Samsung and Whirlpool washing machines.
DC31-00178A washer drain pump motor for Samsung and Whirlpool washing machines, close-up view of pump assembly.
BlueStars technician performing DIY repair on a Samsung washer for drain pump motor maintenance.
Lifetime Warranty

[Lifetime Warranty] DC31-00178A PX3516-01 WA52M7750AV/A4 Washer Drain Pump Motor For Samsung, Whirlpool Washers WA50K8600AW WA48J7770AW WA50K8600AV WF42H5000AW/A2 WF42H5000AW/A2-00 WF42H5000AW/A2-01

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DC31-00178A PX3516-01 Washer Drain Pump Motor Replacement

Key Features

  • Direct replacement drain pump motor for washing machines.
  • Removes water from the washer tub during the drain cycle.
  • Constructed from durable materials for reliable, long-term performance.
  • Engineered to meet or exceed original equipment manufacturer (OEM) specifications.

Replaces / Cross-Reference Part Numbers

  • DC31-00178A
  • DC31-00178D
  • DC31-00187A
  • DC31-00187D
  • PX3516-01
  • DC96-01585L
  • 3989917
  • AP5916591
  • PS9605762
  • EAP9605762

Compatibility & Fitment

  • Fits a wide range of Samsung front-load and top-load washing machine models, including select models in the WA4 and WA5 series.
  • Also compatible with some Samsung dishwasher models.
  • Verify compatibility by matching your original part number with the numbers listed in the cross-reference section.

When to Replace

  • The washer fails to drain or drains very slowly.
  • Water remains in the drum after the cycle completes.
  • Unusual humming, grinding, or loud noises occur during the drain cycle.
  • Leaks are visible from the pump area.
  • The washer displays a drain-related error code.

Installation Tips

  • Disconnect the washer from both the power outlet and water supply before starting the repair.
  • Place towels under the pump and hose connections to manage any residual water.
  • Before installing the new pump, inspect and clear any debris from the drain filter and hoses.
  • Ensure all hose clamps are tight and secure to prevent leaks after installation.
Brand Model Number
Samsung – DC31-00178D / DC31-00178A Washer Drain Pump Motor for some Samsung front-load and top-load washers in WA4, WA5, WF2, WF3, WF4 and WF5 series: WA50K8600AW, WA48J7770AW, WA50K8600AV, WF42H5000AW/A2, WF42H5000AW/A2-00, WF42H5000AW/A2-01, WF42H5600AW/A2, WF42H5600AW/A2-00, WA45K7600AW/A2, WA52J8700AP/A2, WA52J8700AP/A2-00, WV60M9900AV/A5, WA400PJHDWR/AA, WA400PJHDWR/AA-04, WF42H5200AP/A2, WF42H5200AP/A2-01, WF42H5200AF/A2, WF42H5200AF/A2-01, WA456DRHDSU/AA, WA456DRHDSU/AA-04, WA456DRHDSU/AA-05, WA40J3000AW/A2, WA40J3000AW/A2-00, WA40J3000AW/A2-01, WA45H7000AW/A2, WA45H7000AW/A2-01, WA45H7000AW/A2-11
Samsung – DC31-00187A Samsung washer drain pump fits: WF330ANW/XAA, WF330ANW/XAA-01, WF56H9110CW/A2, WF56H9110CW/A2-00, WA45M7050AW/A4, WF45M5100AW/A5-0, WF361BVBEWR/A2-00, WF363BTBEUF/A2, WA456DRHDSU/AA-00, WA456DRHDSU/AA-04, WA456DRHDSU/AA-05, WF431ABP/XAA-08, WF501ANW/XAA-03, WF45M5100AW/A5-00, etc.
Manufacturer
‎BlueStars
Item Weight
‎1.75 pounds
Package Dimensions
‎5.28 x 5.24 x 3.43 inches
Included Components
‎1 x Motor AC Pump
Batteries Included?
‎No
Batteries Required?
‎No

FAQ

This pump motor is compatible with select Samsung and Whirlpool washers. Supported models include WA52M7750AV/A4, WA50K8600AW, WA48J7770AW, WA50K8600AV, and WF42H5000AW/A2, including revisions WF42H5000AW/A2-00 and WF42H5000AW/A2-01. It also fits various Samsung top-load and front-load washers within the WA4, WA5, WF2, WF3, WF4, and WF5 series. Because washer parts can vary by full model and revision code, please verify your full model number and the specific pump part number before ordering.
This pump motor replaces part numbers DC31-00178A and PX3516-01. It also serves as a direct replacement or cross-reference for DC31-00178D, DC31-00187A, DC96-01585L, 3989917, and B35-3A. The most reliable way to ensure compatibility is to match this part against the specific part number currently installed in your machine.
This is the drain pump motor and impeller assembly responsible for removing water from the tub during the drain and spin cycles. If this component malfunctions, the washer may leave water in the tub, pause mid-cycle, or fail to spin properly due to an inability to drain effectively.
Typical symptoms include the washer failing to drain, standing water remaining in the tub, loud grinding or humming noises during the drain cycle, slow draining, or cycles stopping prematurely before the spin phase. If the motor hums but water does not move, the impeller may be damaged or obstructed. If the washer is completely silent during the drain phase, the motor may have failed electrically or may not be receiving power.
Before replacing the pump, inspect the drain filter or coin trap, check the drain hose for kinks or clogs, and look for debris jammed in the pump inlet or impeller area. Small items like coins, hairpins, fabric, and lint buildup can mimic a failed pump. Additionally, if you are comfortable testing electrical components, verify that the washer is sending power to the pump during the drain cycle.
Installation is a moderate repair. On most Samsung-style front-load and top-load washers, the process involves unplugging the unit, shutting off the water supply, draining residual water, removing the access panel, disconnecting the wiring harness, loosening hose clamps, and swapping the pump motor. Essential tools include a Phillips screwdriver, pliers for hose clamps, a nut driver or socket set, towels, and a shallow pan or bucket for residual water. Repairs typically take 30 to 90 minutes depending on the washer layout and pump accessibility.
Common causes of failure include foreign objects jamming or damaging the impeller, normal motor wear, and repeated strain caused by partial clogs in the filter or drain hose. Running the washer with heavy lint buildup or small hard items left in pockets can shorten the pump's lifespan. If the original pump failed due to a blockage, ensure the entire drain path is clear before installing the new unit to prevent the replacement from becoming overloaded.