Details
A modular reservoir for one D5 pump, 0.25 liters, with five G1/4 ports. The Watercool HEATKILLER Tank 200 D5 takes the pump directly in its stainless steel bracket; the pump is not included.
Properties
- Pump
- D5, not included
- Capacity
- 0.25 liters
- Ports
- 5x G1/4 (2 top, left, right, bottom)
- Size
- 275 x 84 x 49 mm
- Material
- Acetal body, acrylic lid
Acetal, acrylic and stainless steel
Watercool calls it the first modular, expandable expansion tank and asks you to experience the highest quality and a modular design. The body is crafted from solid acetal and finished with a transparent Plexiglas GS front. In Watercool's words, the tank combines uncompromising material quality with a clean, technical design. An optional aRGB module can be installed behind the brushed stainless steel panel; this provides stylish, indirect lighting and further enhances the visual appearance.
Flow-optimized and flexible installation
Thanks to its innovative, modular design, the tank can be equipped with additional pump modules in D5 format, the MO-RA IV Tank D5 Expansion, for maximum flow performance and redundancy. Whether you run a single-loop or a multi-pump configuration, Watercool says the HEATKILLER Tank grows with your requirements. The direct pump connection guarantees high flow rates, and the flow-optimized design ensures efficient ventilation.
The side connectors (inputs) allow a horizontal as well as a vertical installation. Installation in server racks is also easily possible. Two optionally available mounting frames, for 2 x 120mm or 2 x 140mm fan slots, ensure uncomplicated installation. One allows the tank to be easily mounted on a suitable radiator/fan slot.
What the loop needs
Add a D5 pump: loosen the stainless steel bracket, guide the pump through it and screw both parts back together evenly and in a cross pattern. For a radiator or fan slot, pick the HEATKILLER TANK Mounting Frame 120 or the Mounting Frame 140. Each port you use takes one of your fittings, and an unused one takes a plug.
Technical data
| Material lid | Acrylic |
| Material body | Acetal |
| External dimensions (L x W x H) | 275 x 84 x 49 mm |
| Weight | approx. 1.10 kg |
| Top inlet (filling openings) | 2x thread G1/4 inch |
| Right inlet | 1x thread G1/4 inch |
| Left inlet | 1x thread G1/4 inch |
| Bottom outlet | 1x thread G1/4 inch |
| Capacity | 0.25 liters |
Notes
- On a radiator no screw may protrude more than 5 mm into it. Watercool uses M3x5 screws without a fan and M3x30 with a 25 mm standard fan.
- An expansion module is screwed to the tank with M5x65 screws, then the M12 to M5 adapter; the O-rings must sit correctly between all modules.
- Watercool recommends demineralized or deionized (distilled) water with a suitable corrosion inhibitor, or Heatkiller Fluid as a ready-mixed coolant.
In the box
- 1x Watercool HEATKILLER Tank 200 D5
- 1x Mounting material
Watercool's assembly instructions cover the optional parts, the pump, the port configuration and the dimensions with each frame.








