SPT SD-6501W 24″-wide Built-In Stainless Steel vs WD21X31906 Dishwasher Electronic Control Board
Updated July 2026 — SPT SD-6501W 24″-wide Built-In Stainless Steel leads on noise level and height.
The SPT SD-6501W is a comprehensive dishwasher offering efficiency and features, while the WD21X31906 is a cost-effective replacement part. Choose based on your needs.
Why SPT SD-6501W 24″-wide Built-In Stainless Steel is better
Functionality
SPT SD-6501W is a complete dishwasher.
Features
Offers 6 wash programs and heated drying.
Capacity
Can handle up to 14 plate settings.
Why WD21X31906 Dishwasher Electronic Control Board is better
Price
WD21X31906 is significantly cheaper.
Specific Use
Designed for replacing control boards.
Sales Rank
Higher sales rank indicates popularity.
Overall score
Specifications
| Spec | SPT SD-6501W 24″-wide Built-In Stainless Steel | WD21X31906 Dishwasher Electronic Control Board |
|---|---|---|
| Type | Dishwasher | Control Board |
| Energy Star | Yes | No |
| Wash Programs | 6 | N/A |
| Drying Function | Heated | N/A |
| OEM Part | No | Yes |
Dimension comparison
Overview
When comparing the SPT SD-6501W 24″-wide Built-In Stainless Steel Tall Tub Dishwasher and the WD21X31906 Dishwasher Electronic Control Board, we see two very different products catering to distinct needs in the realm of dishwashing. The SPT SD-6501W is a fully functional dishwasher designed for users seeking to wash and dry dishes efficiently, priced at $447.55. In contrast, the WD21X31906 is an electronic control board for dishwashers, offered at a lower price of $183.99, intended for those needing a replacement part for their existing appliance.
Design and Build Quality
The SPT SD-6501W showcases a sleek and modern design with a stainless steel interior that enhances its durability and aesthetic appeal. It features a tall tub design that allows for a capacity of up to 14 standard plate settings, making it suitable for larger households. On the other hand, the WD21X31906 is a genuine OEM part, focusing on functionality over aesthetics. It is designed to replace specific electronic control boards but does not contribute any visual enhancement to an appliance as it is not a standalone product.
Features and Functionality
The SPT SD-6501W comes packed with various features, including six wash programs: Heavy, Normal, Light, Eco, Glass, and Rinse, catering to different dishwashing needs. Additionally, it has a heated drying function that ensures efficient drying of dishes, a feature that is critical for those who want their dishes dry and ready to use immediately. Conversely, the WD21X31906 does not offer any washing capabilities; instead, it functions solely as a control board replacement. Users must ensure that this part matches their appliance model, as improper installation can lead to non-refundable issues.
Performance
In terms of performance, the SPT SD-6501W operates quietly at 55dBA, ensuring that it does not disrupt household activities during operation. Its multiple wash options allow users to customize their dishwashing experience based on the load's requirements. The WD21X31906, being a control board, impacts performance indirectly by managing the dishwasher's functions. Its efficacy depends on the specific model it is paired with, as it replaces the original control board to restore functionality.
Energy Efficiency
The SPT SD-6501W is ENERGY STAR certified, meaning it meets or exceeds federal guidelines for energy efficiency. This not only helps in reducing electricity bills but also contributes to environmental conservation. While the WD21X31906 is not directly related to energy efficiency, it plays a critical role in ensuring that the dishwasher it controls operates optimally, which can indirectly affect power consumption depending on the dishwasher's efficiency.
Price Comparison
The SPT SD-6501W is priced at $447.55, while the WD21X31906 is considerably cheaper at $183.99, making it about 59% less expensive. However, it's essential to note that these products serve different purposes. The SPT SD-6501W offers a complete dishwashing solution, while the WD21X31906 is merely a replacement part, which means the price difference reflects not only their functionalities but also their intended uses.
Customer Feedback
The SPT SD-6501W has a sales rank of 5011, indicating a moderate level of popularity among dishwashers. Customers appreciate its large capacity and efficient drying capabilities. In contrast, the WD21X31906 has a better sales rank of 4067, suggesting that it’s a sought-after part for those needing a reliable replacement. Feedback on the WD21X31906 highlights its effectiveness in restoring functionality to dishwashers, which is crucial for users looking to extend the life of their appliances.
Which should you buy?
Ultimately, the choice between the SPT SD-6501W and the WD21X31906 depends on your specific needs. If you are looking for a complete dishwasher that combines style, efficiency, and functionality, the SPT SD-6501W is the clear winner, despite its higher price at $447.55. However, if you are in need of a replacement part for an existing dishwasher, the WD21X31906 at $183.99 is a cost-effective solution. Each product serves its purpose well, but they cater to entirely different requirements in the kitchen appliance landscape.

