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Antminer S21 T21 Water Cooling Plate | Hydro Heatsink Upgrade Kit
The Antminer S21 T21 Water Cooling Plate Upgrade Kit converts your air-cooled S21 or T21 miner into a water-cooled system. The kit includes three corrosion-resistant aluminum water cooling plates that replace the stock heatsinks, along with a cover plate, water distributor, quick connectors, corrugated bellows, and mounting hardware. By switching from air to water cooling, heat dissipation accelerates significantly, improving thermal stability and extending hashboard lifespan.
S21 T21 Water Cooling Plate Kit Contents
The set includes three aluminum water-cooling plates (one per hashboard), a cover plate that secures the water distributor and protects internals from particles and debris, water separators for managing coolant distribution, quick-connect fittings, corrugated bellows, and screws. The corrosion-resistant aluminum construction is compatible with standard glycol-water coolant mixtures.
Antminer S21 Air-to-Water Conversion Benefits
Replacing the original S21 heatsinks with integrated water-cooling plates accelerates heat dissipation beyond what air cooling can achieve. The result: more stable hash rates, significantly reduced noise, and protection against ambient temperature fluctuations that cause thermal throttling. The cover plate also prevents dust, particles, and insects from entering the miner — a common issue in open-air mining facilities that causes premature component failure.


S21 T21 Cooling Plate Specifications
| Specification |
Detail |
| Compatible Models |
Antminer S21, T21 |
| Cooling Plates |
3 pcs (corrosion-resistant aluminum) |
| Includes |
Cover plate, water distributor, quick connectors, bellows, screws |
| Material |
Aluminum (corrosion-resistant) |
| Installation |
Direct replacement of stock air heatsinks |
S21 Hydro Conversion & Related Products
After installing the cooling plates, connect the water loop to your external pump, radiator, and reservoir system. For S19XP Hydro units, the Antminer S19XP+ Hydro Water Cooling Plate covers the previous generation. If you need replacement fans for air-cooled S21 units instead, the Delta PFM1412DE Fan for S21 is the direct replacement. For S21 hashboard component repairs, the BM1368 Tin Tool for S21 chip repair covers the chip-level tooling.
Why Buy Antminer S21 Water Cooling Plates from LYS?
We source S21/T21 cooling kits directly from the Shenzhen supply chain, ensuring precise fit for Bitmain's latest hardware. DDP shipping is included worldwide. Contact us for volume pricing when converting multiple S21 or T21 miners to water cooling.
Next Step: Browse Antminer water cooling accessories or contact our support team at contact@lys-sz.com or via WhatsApp for installation guidance and availability.