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Blue brass G 1/4 inch male/female extension coupler with diamond knurling, 15mm body length

Bykski

Bykski G 1/4in Male/Female Extension Coupler 15mm Blue Brass

SKU CH-8WHE-KGMMT

A G 1/4in male-to-female brass coupler adds 15 mm of clearance with diamond-knurled grip for custom water-cooling loops

  • Product typeCPU Block
  • Product colorBlue

Color Blue

Color Blue

  • G 1/4in male/female thread connects any standard water-cooling fitting
  • 15 mm body height adds clearance in tight loop layouts
  • Diamond knurling gives secure hand-tight grip without tools
  • Brass construction resists corrosion in non-aluminium custom loops
  • 20 mm overall length including threads for precise tubing planning

G 1/4in Male/Female Extension Coupler

The Bykski G 1/4in Male/Female Extension Coupler is a brass fitting designed for custom liquid-cooling loops. It adds 15mm of thread-free length and 20mm overall height to create clearance between components. The diamond-knurled surface allows hand-tightening without tools. It suits builders who need a short spacer in a non-aluminium loop.

Thermals noise and power draw

As a passive brass coupler it generates no heat, produces no noise and draws no power. It simply extends the fluid path between two G 1/4in threaded ports. The metal construction withstands normal loop temperatures and pressures without affecting coolant flow or pump load. No active cooling or electrical connection is required.

What it replaces and when to upgrade

The coupler replaces a direct port-to-port connection when components sit too close for a standard fitting to seat properly. It is worth adding when a reservoir, block or radiator port needs a few millimetres of offset to clear a motherboard heatsink, GPU backplate or tight tubing bend. It is not for loops that use aluminium parts or PrimoChill Opaque and VUE coolants.

How it compares

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

Price $15.99
Typical for this category: the median of 609 items is $15.99.

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Specifications

Product
Product typeCPU Block
Product colorBlue

Questions about this item

How do I install the G 1/4in male/female extension coupler and which step causes leaks?

Hand-tighten the male thread into the female port until the O-ring seats, then add a quarter turn with a soft-jaw wrench; skipping the final quarter turn is the most common cause of slow seepage.

What maintenance or replacement will the brass coupler need later?

Inspect the O-ring and internal finish annually; replace the coupler if the blue coating flakes or the threads show corrosion, especially after using coolants the maker warns against.

What limit appears first during sustained loop operation?

Chemical compatibility is the limiting factor — the internal finish may react with DI-water coolants and is explicitly incompatible with PrimoChill Opaque and VUE series, risking plating damage before any mechanical wear.

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