XPARTCO DD31-00005A Dishwasher Drain Pump Motor
The XPARTCO DD31-00005A is an aftermarket replacement drain pump motor for Samsung dishwashers. This pump uses an internal impeller to force wastewater out of the tub and through the drain hose during the drain phase of the wash cycle — it's the component doing the physical work every time your dishwasher empties itself between cycle stages and at the end of the wash.
Rated 120V, 0.8A. Over time, the impeller can wear down, debris can jam the motor, or the motor windings themselves can fail electrically. A failing drain pump produces a very recognizable pattern: standing water left in the tub after a cycle finishes, water leaking from underneath the dishwasher, unusually loud or grinding noise during the drain phase, or a pump that audibly tries to run for a moment and then shuts off right away without actually clearing the water. It directly replaces AP4342621 and PS4222308.
Quick Answer
The XPARTCO DD31-00005A Dishwasher Drain Pump Motor fixes Samsung dishwashers that won't drain, leave standing water in the tub, leak underneath the unit, or run unusually noisy during the drain phase. 120V, 0.8A. Replaces AP4342621, PS4222308. This is the drain pump — not the same part as the wash/circulation pump (DD31-00004B), which handles spraying water during the wash itself rather than draining it afterward.
Common Problems This Part Fixes
- Dishwasher not draining — standing water left in the tub after a cycle
- Water leaking from underneath the dishwasher
- Unusually loud, grinding, or strange noise during the drain phase
- Pump that tries to run briefly, then shuts off right away without draining
- Dishwasher running noisily overall
- Cycle that stalls or won't advance past the drain step
Cross Reference Information
Part numbers can change over a product's lifecycle as manufacturers update designs or release new appliance models. For your convenience, we've included any known superseded, alternate, or cross-reference part numbers that match this item.
Replaces Part Numbers
This dishwasher drain pump motor directly replaces the following OEM and cross-reference part numbers:
DD31-00005A, 1550731, DW0005A, AP4342621, ASM35435 PD00002014, PS4222308
If your part number is not listed above, contact our support team before ordering and we will verify compatibility.
Compatibility
This drain pump motor is compatible with select Samsung dishwashers, including model numbers such as:
- DMR57LFB, DMR57LFS, DMR57LFW
- DMR77LHB, DMR77LHS, DMR77LHW
- DMR78AHB, DMR78AHS, DMR78AHW
- DMT300RFB, DMT300RFS, DMT300RFW
- DMT400RHB, DMT400RHS, DMT400RHW
- DMT800RHB, DMT800RHS, DMT800RHW
Note — drain pump, not wash pump: This is the drain pump, which removes wastewater from the tub. It is a different part from the DD31-00004B wash/circulation pump motor, which sprays water through the spray arms during the wash itself. Always verify your full model number before ordering. Contact our support team with your model number if you're unsure which pump your dishwasher needs.
Key Features
- Aftermarket replacement drain pump motor — removes wastewater from the tub during the drain phase
- Resolves "not draining," "standing water," "leaking underneath," and "noisy drain phase" symptoms caused by pump failure
- Impeller-driven design for efficient water removal through the drain hose
- Rated 120V, 0.8A
- Direct drop-in replacement — matches the original mounting and hose connections
- Replaces AP4342621 and PS4222308
- Compatible with a range of Samsung dishwasher models
- Aftermarket replacement built to OEM-equivalent quality standards
Product Specifications
| Part Number |
DD31-00005A |
| OEM Part Number |
DD31-00005A |
| Part Type |
Dishwasher Drain Pump Motor |
| Condition |
Aftermarket Replacement |
| Brand |
Samsung |
| Function |
Removes wastewater from the tub during the drain phase |
| Voltage |
120V |
| Amperage |
0.8 A |
| Related Part |
DD31-00004B wash/circulation pump (different function, sold separately) |
| Repair Difficulty |
Moderate — tight working space under the unit |
| Quantity |
1 drain pump motor |
| Compatible Brand |
Samsung |
Installation Notes
⚠️ Unplug Dishwasher And Shut Off Water Supply Before Starting — Remove Standing Water First Unplug the dishwasher and shut off the water supply before beginning. Wear work gloves. If there's standing water left in the tub from the original failure, remove as much as possible by hand with a cup or towel before starting the repair. Access to the drain pump is typically from underneath the unit, which can mean a tight working space — pulling the dishwasher partially out from under the counter, or working from the front after removing the lower access panel, makes this considerably easier depending on your installation. Photograph the wiring and hose connections before disconnecting anything. Disconnect the electrical connector and the drain hose connections from the old pump, remove its mounting screws or clips, and pull it free. Install the new DD31-00005A pump in the same position, reconnect the drain hose connections securely, and reconnect the electrical connector fully. Restore the water supply and power, then run a cycle and check underneath for leaks while confirming the tub drains completely at the end. Tools needed: Phillips screwdriver, pliers, towels or a small cup for removing standing water, work gloves.
Frequently Asked Questions
My dishwasher pump tries to run for a second, then shuts off. Is that the drain pump?
Yes, this is a documented symptom of a failing drain pump motor — one customer described exactly this pattern, where the pump attempted to run and then shut off right away without actually clearing the standing water. This typically points to a motor that's jammed, worn, or electrically failing rather than a clog, since a simple clog usually lets the motor keep running (just ineffectively) rather than shutting off immediately.
Access to my drain pump is really tight. Is that normal?
Yes, this is a common challenge with under-counter dishwasher installations — the drain pump often sits low and toward the back, and reaching it can mean working in a cramped space regardless of the model. Removing standing water first and having patience with the process makes a real difference, and pulling the unit partially forward, if your installation allows it, can improve access significantly.
Is this the same as the wash pump on my dishwasher?
No. This DD31-00005A is specifically the drain pump, which removes wastewater from the tub. Your dishwasher's separate wash/circulation pump (DD31-00004B) is what sprays water through the spray arms during the actual wash portion of the cycle. If your dishwasher isn't cleaning dishes well but drains fine, the wash pump — not this drain pump — is more likely the issue.
Is this an OEM or aftermarket part?
This is an aftermarket replacement part built to OEM-equivalent quality standards. It is not a genuine Samsung OEM part, but is manufactured to match the electrical rating, impeller design, and mounting configuration of the original DD31-00005A drain pump motor used in compatible Samsung dishwashers.
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