LG 24″ QuadWash™ Front Control Built‑in Dishwasher vs WD21X31906 Dishwasher Electronic Control Board
Updated July 2026 — LG 24″ QuadWash™ Front Control Built‑in Dishwasher wins on price and cleaning, WD21X31906 Dishwasher Electronic Control Board wins on sales rank.
The LG 24″ QuadWash™ is a superior choice for those seeking a high-performance dishwasher, while the WD21X31906 is essential for repairs.
Why LG 24″ QuadWash™ Front Control Built‑in Dishwasher is better
Cleaning Power
QuadWash technology ensures thorough cleaning.
Design
Stylish and fingerprint-resistant finish.
Capacity
Includes a 3rd rack for more loading options.
Why WD21X31906 Dishwasher Electronic Control Board is better
Price
Significantly cheaper than a full dishwasher.
Specific Use
Essential for repairing existing dishwashers.
OEM Quality
Genuine OEM part ensures compatibility.
Overall score
Specifications
| Spec | LG 24″ QuadWash™ Front Control Built‑in Dishwasher | WD21X31906 Dishwasher Electronic Control Board |
|---|---|---|
| Brand | LG | Allstar Appliance Parts |
| Type | Dishwasher | Control Board |
| Material | Stainless Steel | Plastic |
| Technology | QuadWash | N/A |
| Warranty | 1 Year | N/A |
Dimension comparison
Overview of the LG 24″ QuadWash™ and WD21X31906
The LG 24″ QuadWash™ Front Control Built-in Dishwasher LDFN4542S is a powerful kitchen appliance designed for superior cleaning with advanced technology. In contrast, the WD21X31906 Dishwasher Electronic Control Board is a specific replacement part intended for repairing dishwashers. While the former offers a complete cleaning solution for your dishes, the latter focuses on the electronic functionality of a dishwasher.
The LG dishwasher is priced at $599.99, which reflects its advanced features and capabilities, while the WD21X31906 is significantly cheaper at $183.99, being a component rather than a full appliance. This stark price difference highlights the distinct nature of these two products.
Key Features of the LG Dishwasher
The LG 24″ QuadWash™ boasts impressive features like QuadWash technology, which uses multi-motion spray arms to reach every corner of your dishes, ensuring thorough cleaning even for heavily soiled items. Additionally, it is equipped with the EasyRack Plus system and a convenient 3rd rack, allowing for flexible loading options.
Its NeveRust stainless steel tub resists rust and odors, and the PrintProof finish keeps the appliance looking pristine and fingerprint-free. With a sales rank of 1609, this dishwasher stands out in the competitive market, emphasizing its popularity and reliability.
Understanding the WD21X31906 Control Board
The WD21X31906 is an essential replacement electronic control board for dishwashers. As a genuine OEM part, it is specifically designed to replace several previous models, ensuring compatibility. However, it is crucial that users verify the part matches their specific appliance before installation, as returns are not accepted once the part has been installed.
Priced at $183.99, this electronic control board serves a very different purpose compared to the LG dishwasher. With a sales rank of 4067, it is less popular, indicating that it may not be as frequently needed as a full dishwasher but remains crucial for those in need of repairs.
Price Comparison
When comparing the prices, the LG dishwasher is priced at $599.99, while the WD21X31906 is available for $183.99. This means that the LG dishwasher is about 226% more expensive than the control board.
This significant price difference underscores the fact that the LG dishwasher is a complete appliance with advanced features, while the WD21X31906 is merely a component designed to restore functionality to existing dishwashers. This comparison highlights the investment required for a new appliance versus the cost of maintaining an existing one.
Cleaning Performance of the LG Dishwasher
One of the standout features of the LG dishwasher is its QuadWash technology, which ensures powerful cleaning by utilizing multi-motion spray arms. This technology reaches every corner of your dishes, making it particularly effective for heavily soiled items. The presence of the EasyRack Plus system and a 3rd rack further enhances its loading flexibility, allowing users to fit more items conveniently.
The LG dishwasher is designed for those who value cleanliness and efficiency in their kitchen, making it a preferred choice for families and individuals with high dishwashing needs. Its ability to handle various types of dishware and utensils makes it a versatile option in the market.
Purpose of the WD21X31906 Control Board
The WD21X31906 serves a very specific function: it is designed to replace the electronic control board in certain dishwasher models. This part is critical for the operation of the dishwasher's electronic functions. For users facing issues with their dishwasher's electronic controls, this part is essential for restoring functionality.
While it may not offer cleaning capabilities or advanced features, the WD21X31906 is vital for those needing to repair an existing dishwasher. Its role is crucial in ensuring that dishwashers can continue to operate effectively, reflecting the importance of maintaining appliances over time.
Durability and Design of the LG Dishwasher
The LG 24″ QuadWash™ is constructed with a NeveRust stainless steel tub that resists rust and odors, ensuring longevity and cleanliness. Its PrintProof stainless steel finish is designed to maintain a clean appearance, resisting fingerprints and smudges.
This durability and stylish design make the LG dishwasher an appealing choice for modern kitchens, where aesthetic appeal is as important as functionality. The combination of advanced materials and thoughtful design contributes to its popularity, reflected in its sales rank of 1609.
Maintenance and Replacement with the WD21X31906
Maintaining a dishwasher can sometimes require replacing parts, and the WD21X31906 is a crucial component for ensuring continued operation. As a genuine OEM part, it guarantees compatibility with various dishwasher models. However, users must ensure that it matches their appliance model before installation to avoid complications.
The necessity of such replacement parts highlights the importance of regular maintenance for appliances. While the LG dishwasher offers a robust cleaning solution, the WD21X31906 serves those who may need to repair their existing dishwashers, emphasizing the importance of knowing when to invest in a new appliance versus repairing an older model.
Which should you buy?
Ultimately, the decision between the LG 24″ QuadWash™ and the WD21X31906 control board depends on your needs. If you're looking for a powerful and efficient dishwasher that can handle a variety of cleaning tasks, the LG dishwasher is the clear winner. At $599.99, it provides advanced features, superior cleaning technology, and a stylish design suited for modern kitchens.
On the other hand, if you need a specific replacement part for your existing dishwasher, the WD21X31906 is the right choice at $183.99. While it lacks the features of a full appliance, it is essential for maintaining functionality. Understanding the context of your needs will guide you in making the right purchase decision.

