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Matte-black brass compression fitting with G1/4 thread and hidden O-ring

Bitspower

Bitspower BP-MBCPF-CC6U G1/4" 7/16" ID 5/8" OD compression fitting

SKU CH-ZJFV-9NDBE MPN BP-MBCPF-CC6U

Connects 7/16" ID soft tubing to G1/4" ports with a matte-black brass compression fitting

  • Product typeFittings
  • True Hi-Flow design maximises coolant throughput
  • G1/4" thread fits standard water-block ports
  • Hidden O-ring seals without visible rings
  • Hi-quality brass body resists corrosion
  • Matte black finish matches stealth builds

Straight G1/4" compression fitting

This Bitspower fitting connects soft tubing with a 7/16" inner diameter and 5/8" outer diameter to any component featuring a standard G1/4" thread. The matte black brass body uses a hidden O-ring design to maintain a clean appearance while sealing reliably under pressure. Its true hi-flow internal geometry minimises restriction for custom-loop builders.

Suits single-loop custom cooling

Enthusiasts assembling a custom water-cooling loop with matching soft-tubing dimensions will find the correct thread and seal here. The 5 mm thread length fits most water blocks, radiators, reservoirs and pumps without bottoming out. Builders using hard tubing, different inner-diameter sizes, or push-on barb connections cannot use this fitting.

G1/4" thread with 7/16" ID / 5/8" OD

The decisive specification is the combination of a G1/4" male thread and the precise 7/16" inner diameter paired with a 5/8" outer diameter for soft tubing. Only tubing manufactured to those exact dimensions will compress and seal correctly on this fitting. Verify your tubing measurements before ordering.

How it compares

Measured against everything we stock in Liquid Cooling & AIO Coolers, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 91% of the 1,190 comparable items (median $71.99).

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Specifications

Product
Product typeFittings

Questions about this item

How do I install this G1/4" compression fitting onto my water block without leaking?

Thread the fitting 5 mm into the G1/4" port by hand, then snug it with a wrench; push the 7/16" ID soft tubing fully over the barbs so the hidden O-ring seals, and tighten the compression collar evenly.

Which part of this fitting will need replacement first after long-term use?

The hidden O-ring inside the compression collar is the wear item; it can degrade from coolant additives or repeated disassembly, so keep spare O-rings for the 7/16" ID size.

What flow restriction appears first when running this fitting at high pump speeds?

The true Hi-Flow design minimises restriction, but the 7/16" inner diameter of the tubing remains the narrowest passage and sets the practical flow ceiling.

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