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Clear acrylic reservoir with copper accents and fill indicator, 5.25 bay mount

Alphacool

Alphacool Repack Single Bay Reservoir Rev.2 G1/4 Acrylic 15039 diy cooling

SKU CH-E3SS-4BBE9

A single-bay reservoir for custom liquid-cooling loops, mounting in a 5.25 drive bay with G1/4 ports, a 3/8 fill port and a clear acrylic body showing coolant level

  • Product typeReservoir
  • Fits a standard 5.25 drive bay for compact front-panel installation
  • G1/4 threads provide broad fitting compatibility and flexible loop routing
  • Extra-strong acrylic construction adds rigidity and resists deformation under pressure
  • Front 3/8 fill port with sealed plug simplifies topping up the loop
  • Pull-forward design allows easy filling without removing the reservoir

Alphacool Repack Single Bay Reservoir 15039

This acrylic reservoir fits a standard 5.25 drive bay and provides G1/4 threads for loop connections. It is built for custom liquid-cooling enthusiasts who want a compact front-mounted reservoir with a visible fill-level indicator.

Upgrade from basic tube reservoirs

The bay-mount design replaces loose reservoirs that occupy case floor space or require custom brackets. The jump is worth it when you have a free 5.25 bay and want a rigid, front-accessible unit that can be pulled forward for filling without removing panels.

Tool-less bay installation

The reservoir secures like an optical drive using case screws, so no specialised tools are needed. Common issues include cross-threading the G1/4 ports if fittings are forced, and forgetting to reseat the 3/8 fill-port plug after topping up, which can cause leaks.

How it compares

Measured against everything we stock in Heatsinks & Water Blocks, at today’s prices. Recalculated every night.

Price $37.99
Pricier than about 74% of the 609 comparable items (median $15.99).

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Specifications

Product
Product typeReservoir

Questions about this item

Does the Alphacool Repack Single Bay Reservoir Rev.2 fit a standard 5.25 drive bay?

Yes, it is designed for installation in a vacant 5.25 drive bay at the front of your enclosure.

How is the reservoir mounted and what step is often missed?

It mounts like an optical drive using the bay screws; the step often missed is pulling the reservoir forward to access the front 3/8 fill port before securing it fully.

What maintenance does the reservoir need over time?

The 3/8 fill port uses a black nickel-plated screw plug that must be removed for coolant top-ups; the extra-strong Plexi body resists cracking during repeated opening.

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