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Blue metal G 1/4 fitting for 13mm by 19mm flexible tubing

Bykski

Bykski B-FT4-TK DIY Cooling 13mm ID 19mm OD Fitting

SKU CH-DYCT-9CRDE MPN B-FT4-TK

Connects 13 mm ID by 19 mm OD flexible tubing to G 1/4 thread ports in non-aluminium loops

  • TypeCPU Block
  • ColorBlue
  • G 1/4 thread connects to standard water-block ports
  • Fits 13mm ID by 19mm OD flexible tubing
  • Non-aluminium loop compatibility prevents galvanic corrosion
  • Single fitting included for custom loop assembly
  • Blue finish matches themed build aesthetics

Bykski Flex Fitting for 13mm ID Tubing

The Bykski B-FT4-TK is a G 1/4 inch threaded fitting designed for custom liquid-cooling loops. It accepts flexible tubing with a 13mm inner diameter and 19mm outer diameter. The blue finish adds a colour accent to the build. It is intended for enthusiasts assembling their own open-loop cooling systems.

Thermals Noise and Power Draw

As a passive brass fitting, it generates no heat, produces no noise and draws no electrical power. Thermal performance depends entirely on the surrounding blocks, radiators and pump chosen for the loop. The component simply provides a leak-tight seal between tubing and G 1/4 ports.

Loop Compatibility and Build Integration

The fitting requires a non-aluminium loop to avoid galvanic corrosion. It connects directly to any component with a standard G 1/4 thread port such as water blocks, radiators, reservoirs or pumps. Each fitting secures one tube end, so two are needed per component connection. No tools beyond basic hand tightening are required for installation.

Highlights

  • G 1/4 thread connects to standard water-block ports
  • Fits 13mm ID by 19mm OD flexible tubing
  • Non-aluminium loop compatibility prevents galvanic corrosion
  • Single fitting included for custom loop assembly
  • Blue finish matches themed build aesthetics

Specifications

TypeCPU Block
ColorBlue

Questions about this item

How do I install the G 1/4 thread fitting onto my water block without stripping the threads?

Screw the fitting into the G 1/4 port by hand until the O-ring seats, then give a light quarter-turn with a wrench; over-tightening crushes the seal and causes leaks.

What maintenance will the fitting and 13 mm ID tubing need over time?

Inspect the O-ring and tubing ends every six months; replace the tube if it hardens or discolours, and swap the O-ring if it flattens or cracks.

What is the first flow restriction I will hit when running high heat loads through the 13 mm ID path?

The 13 mm inner diameter creates the primary pressure drop; pump head must overcome this restriction before the CPU block or radiator becomes the bottleneck.

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