Sharp SDW6504MS Stainless Steel Dishwasher, vs WD21X31906 Dishwasher Electronic Control Board
Updated July 2026 — Sharp SDW6504MS Stainless Steel Dishwasher, wins on price and noise level, WD21X31906 Dishwasher Electronic Control Board wins on sales rank.
The Sharp SDW6504MS Stainless Steel Dishwasher is a superior choice for those seeking a complete appliance, while the WD21X31906 is essential for repairs.
Why Sharp SDW6504MS Stainless Steel Dishwasher, is better
Functionality
Complete dishwasher versus a control board
Capacity
Holds 12 place settings compared to none
Efficiency
Operates quietly at 52 dBA
Why WD21X31906 Dishwasher Electronic Control Board is better
Price
Lower cost for a replacement part
Specificity
Designed for a specific repair
OEM Quality
Genuine OEM part for reliability
Overall score
Specifications
| Spec | Sharp SDW6504MS Stainless Steel Dishwasher, | WD21X31906 Dishwasher Electronic Control Board |
|---|---|---|
| Brand | Sharp | Allstar Appliance Parts |
| Type | Dishwasher | Control Board |
| Material | Stainless Steel | Electronic |
| Warranty | 1 Year | N/A |
| Energy Efficiency | High | N/A |
Dimension comparison
Overview of the Products
The Sharp SDW6504MS Stainless Steel Dishwasher is a full-fledged appliance designed for efficient dishwashing, while the WD21X31906 Dishwasher Electronic Control Board serves as a crucial component for repairs. The dishwasher is priced at $399.00, making it a significant investment for those looking to upgrade their kitchen, whereas the electronic control board is priced at $183.99, catering to those who need a replacement part. Their distinct purposes—one as a fully functional dishwasher and the other as a repair part—highlight their differences in usage and value.
Design and Build Quality
The Sharp SDW6504MS Stainless Steel Dishwasher features a sophisticated design with a pocket handle and a fingerprint-resistant stainless steel exterior. This model combines durability with aesthetic appeal, making it a stylish addition to any kitchen. On the other hand, the WD21X31906 Electronic Control Board is a functional component with no visible design features, as it resides internally in the dishwasher. Its construction is focused solely on performance rather than aesthetic appeal, which underscores the very different roles these products play in the kitchen environment.
Performance and Efficiency
The Sharp SDW6504MS operates at a quiet 52 dBA, allowing for seamless dishwashing without disruptive noise. It offers 5 washing cycles and a half-load option, which helps conserve water and energy, making it an efficient choice for everyday use. In contrast, the WD21X31906 Electronic Control Board does not have performance specifications in terms of cleaning or efficiency, as its role is to control the dishwasher's functions rather than perform them itself. Therefore, while the dishwasher showcases efficiency in cleaning, the control board is essential for maintaining the operational efficiency of the dishwasher.
Capacity and Loading Options
The Sharp SDW6504MS boasts a capacity of 12 place settings, making it suitable for families and gatherings. Its adjustable upper rack allows for 2 inches of height adjustment, accommodating taller dishes and providing flexible loading options. In contrast, the WD21X31906 does not offer any capacity features, as it is not a standalone product but rather a replacement part. This stark difference highlights that the dishwasher is designed for versatility in dish loading, while the control board is solely focused on functionality within an existing dishwasher setup.
Price Comparison
The Sharp SDW6504MS is priced at $399.00, while the WD21X31906 is available for $183.99. The dishwasher is about 117% more expensive than the control board, reflecting its role as a comprehensive appliance rather than just a component. The price difference underscores the investment required for a new dishwasher compared to the cost of maintaining an existing model. For those looking for a complete appliance, the price of the Sharp dishwasher is justified by its features and capabilities.
Maintenance and Longevity
The Sharp SDW6504MS is designed for durability, with a hybrid construction that combines a stainless steel interior with a heavy-duty plastic floor. This design not only enhances its longevity but also ensures optimal performance throughout its lifespan. The WD21X31906, as an electronic control board, is a critical part that may require replacement over time, depending on the usage and maintenance of the dishwasher. While the dishwasher may offer years of service, the control board's durability depends on the care of the entire appliance.
User Experience and Ratings
The Sharp SDW6504MS has a sales rank of 132, indicating its popularity among consumers and suggesting a positive reception based on user experiences. This rank reflects the satisfaction of customers who appreciate its quiet operation, efficiency, and design. Conversely, the WD21X31906 has a sales rank of 4067, which may indicate that it is a less frequently purchased item, likely due to its nature as a replacement part. This difference in sales rank highlights the Sharp dishwasher's appeal as a new purchase compared to the WD21X31906's role in maintenance.
Which should you buy?
Ultimately, the choice between the Sharp SDW6504MS Stainless Steel Dishwasher and the WD21X31906 Dishwasher Electronic Control Board hinges on your current needs. If you're in the market for a new dishwasher that combines efficiency, quiet operation, and modern design, the Sharp model is a compelling choice at $399.00. However, if you are looking to repair an existing dishwasher and need to replace the control board, the WD21X31906 at $183.99 is a necessary investment to restore functionality. Each product serves its distinct purpose effectively, so your decision should align with whether you're upgrading or maintaining your kitchen appliance.

