Sharp SDW6888JS 42 dBA Stainless Fully Integrated vs WD21X31906 Dishwasher Electronic Control Board
Updated July 2026 — Sharp SDW6888JS 42 dBA Stainless Fully Integrated wins on price and noise, WD21X31906 Dishwasher Electronic Control Board wins on sales rank.
The Sharp SDW6888JS is a high-quality dishwasher with advanced features, while the WD21X31906 is a budget-friendly replacement part. Choose based on your needs.
Why Sharp SDW6888JS 42 dBA Stainless Fully Integrated is better
Advanced Features
The Sharp dishwasher offers smart controls and multiple wash cycles.
Noise Level
Operates at a quiet 42 dBA.
Cleaning Performance
Enhanced cleaning with Power Wash sprayer.
Why WD21X31906 Dishwasher Electronic Control Board is better
Price
The WD21X31906 is significantly cheaper.
Specific Use
Designed specifically as a replacement part.
OEM Quality
Genuine OEM part ensures compatibility.
Overall score
Specifications
| Spec | Sharp SDW6888JS 42 dBA Stainless Fully Integrated | WD21X31906 Dishwasher Electronic Control Board |
|---|---|---|
| Brand | Sharp | Allstar Appliance Parts |
| Model | SDW6888JS | WD21X31906 |
| Material | Stainless Steel | N/A |
| Voice Control | Yes | No |
| Warranty | Comprehensive | Limited |
Dimension comparison
Overview of the Products
In this comparison, we will examine the Sharp SDW6888JS 42 dBA Stainless Fully Integrated Built-in Smart Dishwasher and the WD21X31906 Dishwasher Electronic Control Board. The Sharp dishwasher is priced at $848.97, while the electronic control board is significantly cheaper at $183.99, making it about 78% less expensive. However, these two products serve entirely different purposes in the realm of dishwashing appliances.
Design and Build Quality
The Sharp SDW6888JS is designed with modern aesthetics in mind, featuring a stainless steel finish that seamlessly integrates into any kitchen decor. Its fully integrated design allows for a sleek appearance, while the deep third rack provides extra capacity for flatware and cooking utensils. On the other hand, the WD21X31906 is an electronic control board, which is not a standalone appliance but rather a component necessary for the operation of compatible dishwashers. While the Sharp model boasts premium features such as backlit touch controls and LED interior lighting, the WD21X31906 is primarily a functional part with no aesthetic or build quality considerations.
Noise Level and Operation
The Sharp SDW6888JS operates at a remarkably low noise level of 42 dBA, making it ideal for homes where quiet operation is a priority. This Library Quiet™ technology ensures that conversations can continue undisturbed during wash cycles. In contrast, the WD21X31906 control board does not contribute to noise levels since it is an internal component of a dishwasher. While it plays a crucial role in the operation of dishwashers, it does not have a noise rating, and thus, the comparison is not applicable in this category.
Features and Functionality
When it comes to features, the Sharp SDW6888JS stands out with its smart controls compatible with Amazon Alexa, allowing for voice control capabilities. It offers six washing cycles and seven options, including a Power Wash sprayer designed to target heavily soiled items. In contrast, the WD21X31906 is a genuine OEM part that replaces multiple control board models but lacks any operational features of its own. Its primary function is to ensure the dishwasher it’s installed in operates correctly, which limits its functionality compared to the comprehensive features of the Sharp dishwasher.
Performance and Cleaning Efficiency
The cleaning performance of the Sharp SDW6888JS is enhanced by its Power Wash sprayer, designed for tackling tough stains and baked-on food. This model is Energy Star qualified, which speaks to its efficiency in cleaning while consuming less energy. The ability to customize washing cycles further enhances its performance capabilities. The WD21X31906, being an electronic control board, does not have a performance rating or cleaning efficacy to offer. Its effectiveness is entirely reliant on the dishwasher it is installed in, making it difficult to compare directly with the Sharp model.
Price Comparison
The price difference between the two products is significant, with the Sharp SDW6888JS priced at $848.97 and the WD21X31906 at $183.99. This means that the dishwasher is about 78% more expensive than the control board. While the Sharp model offers advanced features and cleaning capabilities, the control board serves a specific replacement purpose and is priced accordingly. This makes the WD21X31906 a more budget-friendly option for those needing a replacement part rather than a complete appliance.
Customer Popularity and Sales Rank
In terms of popularity, the Sharp SDW6888JS has a sales rank of 2213, indicating its relatively strong position in the market for dishwashers. Meanwhile, the WD21X31906 has a sales rank of 4067, which suggests it is less sought after compared to the Sharp model. The higher rank of the dishwasher reflects its appeal to consumers looking for a high-quality, feature-rich appliance, while the control board’s rank indicates its importance in the repair market but with less consumer engagement.
Warranty and Support
The warranty and support for the Sharp SDW6888JS are likely to be more comprehensive, given its status as a major appliance. Typically, dishwashers come with warranties that cover various parts and labor. In contrast, the WD21X31906, being an electronic component, comes with a specific warranty that may be limited. The manufacturer advises that if the part does not match the appliance, it should not be installed, as it will not be refundable once installed. This could be a potential drawback for consumers concerned about compatibility issues.
Which should you buy?
Ultimately, the decision between the Sharp SDW6888JS and the WD21X31906 comes down to your specific needs. If you are in the market for a high-quality dishwasher that offers advanced features, quiet operation, and excellent cleaning performance, the Sharp SDW6888JS is the clear choice at $848.97. However, if you need a replacement electronic control board for an existing dishwasher and are looking for a cost-effective option, the WD21X31906 at $183.99 is the more suitable product. Assess your requirements to make the best choice for your kitchen.

