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Silver brass G 1/4 inch male female extension coupler 7.5mm height diamond knurled finish

Bykski

Bykski G 1/4in Male/Female Extension Coupler 7.5mm

SKU CH-WY3Z-B5MA9

A G 1/4in male-to-female brass extender adds 7.5 mm clearance for custom-loop fittings

  • TypeCPU Block
  • ColorSilver
  • Extends fittings by 7.5 mm for tight clearance
  • G 1/4 in male-to-female thread fits standard water-cooling loops
  • Brass body with diamond knurling gives secure hand-tight grip
  • 5 mm overall height including threads keeps profile low
  • Designed for non-aluminum loops; not for DI water or PrimoChill opaque coolants

G 1/4in Extension Coupler for Custom Loops

The Bykski G 1/4in male/female extension coupler adds 7.5mm of usable thread length to any standard G 1/4in fitting. It is intended for custom liquid-cooling builders who need extra clearance between components or between a component and a radiator. The brass body with diamond knurling allows hand-tightening without tools. This part fits any G 1/4in threaded port in a non-aluminium loop.

Sustained Use in a Sealed Loop

Under continuous circulation the brass coupler remains mechanically stable and does not introduce flow restriction beyond the added length. The internal finish limits coolant compatibility; the manufacturer states it may not be suitable for DI water based coolants and is not compatible with PrimoChill Opaque and VUE coolant series. Builders planning long-term fills should verify coolant chemistry before assembly.

Installation Notes and Common Issues

The coupler threads directly into a female G 1/4in port and accepts a male G 1/4in fitting on the opposite end, requiring only hand pressure thanks to the knurled grip. The most frequent issue is using it with incompatible coolants, which can degrade the internal finish and cause particulate contamination. Overtightening with tools can also damage the threads, so hand-tight plus a slight turn is recommended.

Highlights

  • Extends fittings by 7.5 mm for tight clearance
  • G 1/4 in male-to-female thread fits standard water-cooling loops
  • Brass body with diamond knurling gives secure hand-tight grip
  • 5 mm overall height including threads keeps profile low
  • Designed for non-aluminum loops; not for DI water or PrimoChill opaque coolants

Specifications

TypeCPU Block
ColorSilver

Questions about this item

Does the brass coupler add any pump noise or heat when the loop runs continuously?

The solid brass extension adds no moving parts, so it contributes zero pump noise and negligible thermal load during all-day operation.

Which fittings or tubing must I already own for the G 1/4in male/female threads to connect?

Any G 1/4in threaded compression or barb fittings and matching tubing will mate directly with the male and female ends.

Will the 7.5 mm extension body clear the tight spacing around my older GPU block and radiator ports?

The 7.5 mm unthreaded height and diamond-knurled grip let you thread it into crowded ports without needing extra wrench space.

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