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Clear borosilicate glass cylinder reservoir with black POM end caps, 100 mm tube length, DDC pump mount, 70 x 70 x 177.3 mm overall

Watercool

Watercool Heatkiller Tube Reservoir 100mm DDC liquid cooler

SKU CH-EM5X-8WY2F

Modular 100 mm borosilicate glass reservoir with tool-free bayonet lid and DDC pump mount

  • Product colorClear
  • Key featuresThe HEATKILLER® Tube Series is a modular series of high end
  • Tool-free bayonet lid enables quick refills
  • Borosilicate glass resists scratches, chemicals and heat
  • 100 mm tube length fits compact builds
  • DDC pump mount integrates reservoir and pump
  • 3 mm overall height suits tight spaces

Purpose and audience

The Watercool Heatkiller Tube Reservoir 100mm DDC is a modular liquid-cooling reservoir designed for custom loop builders who want a compact, high-end component. It integrates a pump top for DDC pumps by Lowara and their derivatives, combining fluid storage and pump mounting in a single unit.

Compatibility check

Verify that your case has space for the 70 x 70 x 177.3 mm footprint and that you are using a supported DDC pump variant. The reservoir uses G1/4 threads for loop connections, so confirm your fittings match this standard. Ensure the 100 mm tube length suits your planned loop volume and layout.

Build quality and daily use

The tube is made from borosilicate glass, which resists scratches, chemicals and thermal stress, while the cover uses POM for durability. A large filling mouth with a tool-free bayonet catch lid simplifies refilling and maintenance. The modular design allows the glass tube to be swapped for 150 mm or 200 mm versions if capacity needs change.

How it compares

Measured against everything we stock in Liquid Cooling & AIO Coolers, at today’s prices. Recalculated every night.

Price $118.99
Pricier than about 72% of the 1,190 comparable items (median $71.99).

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Specifications

Product
Brand nameWatercool
Model nameMBVB01MZ3OWOX
Product colorClear

Questions about this item

Does the 100 mm tube reservoir include a pump or must a DDC pump be bought separately?

This is the standalone version, so a DDC pump must be purchased separately.

Which tube length should I choose among the 100 mm, 150 mm and 200 mm options?

Pick the length that fits your case clearance; the 100 mm tube measures 177.3 mm tall overall.

What does the 100 mm figure represent once the reservoir is installed in a loop?

It is the glass tube length; the full reservoir height is 177.3 mm with a 70 mm square footprint.

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