Barrow G1/4 inch straight female-to-male extension 40 mm, black (TNYZ-G40 b)

Barrow G1/4" straight female-to-male extension 40 mm in black is a compact metal inline coupling designed for PC liquid cooling systems. It converts a G1/4" female thread to a male thread while adding 40 mm of straight extension, allowing users to bridge short gaps between components or adjust fitting positions without changing tubing layout. The black finish matches common cooling hardware and helps maintain a consistent aesthetic in custom loops.

Advantages

The metal construction provides durability and stable threading for repeated assembly and disassembly. Its straight, short 40 mm length offers a predictable offset that simplifies radiator, block, and reservoir alignment. The G1/4" standard threading ensures broad compatibility with most water-cooling fittings and components, while the black coating resists surface wear and blends with other black or dark hardware.

Suitable for

• Extending or bridging short gaps between water-cooling components
• Adjusting fitting positions on radiators, water blocks and reservoirs
• Creating cleaner tubing runs in custom PC liquid cooling loops
• Temporary or permanent inline connections where a straight offset is required

Key specifications

• Thread standard: G1/4" (female to male)
• Overall extension length: 40 mm
• Orientation: straight inline coupling
• Material: metal construction (black finish)
• Finish: black-coated surface

How to use

Hand-start the threads to ensure correct engagement, then tighten with an appropriate wrench until snug; avoid over-tightening to prevent damage to threads or mating components. Use in-line between a female-threaded fitting and a male-threaded port to add 40 mm of straight extension. Apply thread sealant or PTFE tape only where recommended for the specific fittings and system; many water-cooling fittings rely on compression and do not require additional sealant.

Recommendations

Verify thread compatibility before installation and ensure all connections are leak-tested after assembly. When routing tubing, plan the placement of the extension to minimize stress on fittings and prevent kinking. For repeated changes, inspect threads and finish for wear and replace if thread integrity is compromised.