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Clear cylindrical Plexiglas reservoir with black POM end caps and polished copper plugs, 100mm tall by 50mm wide

Alphacool

Alphacool 15718 100mm 50mm DIY Cooling Reservoir

SKU CH-JGVF-YKWKW MPN 15718

Cylindrical DIY reservoir with three G1/4 ports, 100mm height and 50mm diameter

  • TypeReservoir
  • POM end pieces increase chemical resistance and durability
  • 100 mm height fits tight chassis layouts
  • 50 mm diameter keeps loop footprint compact
  • Three G1/4 ports allow flexible inlet and outlet routing
  • Removable riser tube enables horizontal mounting and top-fill configurations

Compact POM/Plexi Reservoir

The Alphacool 15718 is a 100mm tall cylindrical reservoir with a 50mm diameter designed for custom water-cooling loops. Three G1/4 ports provide flexible routing for pump, radiator and fill connections. Transparent Plexi tube and POM end pieces suit enthusiasts building a show-piece system. Horizontal or vertical mounting is supported.

Loop Compatibility Check

Verify that your case or mounting bracket can accommodate a 100mm by 50mm cylinder and that three G1/4 fittings match your existing tubing or adapter sizes. Confirm you have space for a horizontal run if you plan to lay the reservoir on its side. Ensure the loop design does not require an integrated LED hole because none is present on this unit.

Upgrade From Acrylic Tube Reservoirs

Replaces older acrylic reservoirs that lack removable riser tubes or polished copper screw plugs. The extra top thread simplifies adding a dedicated fill port without extra drilling. Worth the jump when you need horizontal mounting freedom, easier internal cleaning via the removable riser, or the cleaner look of transparent mounts included in the box.

Highlights

  • POM end pieces increase chemical resistance and durability
  • 100 mm height fits tight chassis layouts
  • 50 mm diameter keeps loop footprint compact
  • Three G1/4 ports allow flexible inlet and outlet routing
  • Removable riser tube enables horizontal mounting and top-fill configurations

Specifications

TypeReservoir

Questions about this item

Does the Alphacool 15718 reservoir include mounting hardware or must I buy brackets separately?

Transparent mounting brackets are included with the reservoir for almost invisible installation.

How do I choose between the different port orientations on the 100 mm high reservoir?

The unit has three G1/4 threads on the top piece; one can be used for a fill port while the other two serve as inlet and outlet in any orientation.

What does the 50 mm diameter mean for coolant capacity inside my loop?

The 50 mm diameter combined with the 100 mm height gives a compact internal volume suited for small-form-factor builds where space is limited.

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