WD19X25278 Dishwasher Diverter Assembly
The XPARTCO WD19X25278 is an aftermarket replacement diverter assembly for GE dishwashers, and also fits select Hotpoint, Haier, Monogram, and Café models. This assembly controls the flow of water to the spray arms, directing wash water to the upper or lower spray arm at the correct point in the cycle for thorough, even cleaning.
The assembly includes a valve and float mechanism designed to optimize water flow while minimizing noise. Common causes of failure include a worn or cracked diverter valve, or a rubber boot/hose connection that develops a leak over time. Symptoms of a failing diverter assembly include water pooling underneath the dishwasher, poor washing performance from one or both spray arms, or unusual noise during the wash cycle. It directly replaces AP6871922, WD18X21678, 4922277, PS12710077, WD00X25260, WD19X25259, and WD19X25278-25PK.
Quick Answer
The XPARTCO WD19X25278 Dishwasher Diverter Assembly fixes GE, Hotpoint, Haier, Monogram, and Café dishwashers with water pooling underneath the unit, poor washing performance from the spray arms, or unusual noise during the cycle. Replaces AP6871922, WD18X21678, 4922277, PS12710077, WD00X25260, WD19X25259, WD19X25278-25PK. Make sure the diverter is fully engaged with the spout on the wash pump before tightening the hose clamp — one customer had the tube cut when tightening the clamp without full engagement first.
Common Problems This Part Fixes
- Water pooling or leaking underneath the dishwasher
- Poor washing performance from one or both spray arms
- Unusual noise during the wash cycle
- Water not properly directed to the correct spray arm
- Inconsistent cleaning results between the upper and lower racks
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 For your convenience, we've included any known superseded, alternate, or cross-reference part numbers that match this item.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 diverter assembly directly replaces the following OEM and cross-reference part numbers:
WD19X25278, 4466639, 4922277, WD00X25260, WD18X21678, WD19X25259, WD19X25278-25PK, AP6024268, AP6871922, AGE24645, PD00049646, EAP11736568, EAP12710077, PS11736568, PS12710077
If your part number is not listed above, contact our support team before ordering and we will verify compatibility.
Compatibility
This diverter assembly is compatible with select GE dishwashers, and also fits select Hotpoint, Haier, Monogram, and Café dishwashers built on the GE platform, including model numbers such as ADT521PGJ0BS, ADT521PGJ0WS, ADT521PGJ2BS, GDT655SGJ5BB, GDF510PGJ0BB, GDF511PGM0WW, GDF520PGJ0BB, and GDF530PGM0BB.
Note: The assembly may include multiple parts depending on your model — refer to your appliance's parts diagram for a complete list. Always verify your full model number before ordering. Contact our support team with your model number if you're unsure.
Key Features
- Aftermarket replacement diverter assembly — controls water flow to the spray arms
- Resolves "water pooling underneath," "poor spray arm performance," and "unusual noise" symptoms
- Valve and float assembly engineered to optimize water flow while minimizing noise
- Direct drop-in replacement matching the original mounting and connections
- Replaces AP6871922, WD18X21678, 4922277, PS12710077, WD00X25260, WD19X25259, and WD19X25278-25PK
- Compatible with GE, Hotpoint, Haier, Monogram, and Café dishwashers
- Aftermarket replacement built to OEM-equivalent quality standards
- DIY-friendly repair
Product Specifications
| Part Number |
WD19X25278 |
| OEM Part Number |
WD19X25278 |
| Part Type |
Dishwasher Diverter Valve Assembly |
| Condition |
Aftermarket Replacement |
| Function |
Controls water flow direction to the upper and lower spray arms |
| Design |
Valve and float assembly |
| Repair Difficulty |
Easy to Moderate — DIY-friendly |
| Quantity |
1 diverter assembly |
| Compatible Brands |
GE, Hotpoint, Haier, Monogram, Café |
Installation Notes
⚠️ Unplug Dishwasher And Shut Off Water Supply Before Starting — Fully Engage The Spout Before Tightening The Clamp Disconnect power at the outlet or shut off the circuit breaker, and shut off the water supply before beginning. Wear work gloves. Open the dishwasher door and remove the racks to expose the bottom of the dishwasher. Locate the diverter assembly at the bottom of the unit and remove the two screws securing it in place. Disconnect the old assembly from the wash pump spout and any hose connections. Before tightening the hose clamp on the new assembly, make sure the diverter is fully and securely engaged with the spout on the wash pump. One customer had their diverter's tube cut when the clamp was tightened without the assembly being fully seated first — take your time to confirm a proper seat before applying clamp pressure. Secure the new WD19X25278 assembly in place with the two mounting screws. Reconnect any hose connections and reinstall the dish racks. Restore the water supply and power, then run a test cycle — ideally checking underneath the unit partway through — to confirm no leaking from the diverter area and correct water distribution to both spray arms. Tools needed: Phillips screwdriver, pliers, work gloves.
Frequently Asked Questions
I'm seeing water pooling under my dishwasher. Is this the part I need?
Yes, this is a commonly documented symptom. If the diverter's rubber boot or hose connection has developed a leak, water can spray or drip during the wash cycle and collect underneath the unit. One customer traced their leak to a factory-defective hose in the diverter assembly, and unfortunately the leaking water had also gotten into their circulation pump motor over several loads, eroding the motor brushes — so it's worth inspecting the pump motor as well if you've had a diverter leak for a while before noticing it.
Any tips to avoid damaging the new part during installation?
Yes — make sure the new diverter is fully engaged with the spout on the wash pump before tightening the hose clamp. One customer's first replacement part was ruined because the clamp was tightened before the assembly was properly seated, which cut into the tube. Taking an extra moment to confirm a full, secure connection before clamping down prevents this.
Is this a difficult repair?
No, this is generally a DIY-friendly repair. It involves removing the dish racks, unscrewing two mounting screws to access the diverter at the bottom of the dishwasher, and swapping the assembly, typically without needing to pull the dishwasher out from under the counter.
Is this an OEM or aftermarket part?
This is an aftermarket replacement part built to OEM-equivalent quality standards. It is not a genuine GE OEM part, but is manufactured to match the valve and float design, mounting configuration, and connections of the original WD19X25278 diverter assembly used in compatible GE, Hotpoint, Haier, Monogram, and Café dishwashers.
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