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Black copper radiator 420mm with integrated brass fittings

Phanteks

Phanteks PH-GEF-RAD423_BK 420mm 30mm thick copper radiator diy cooling

SKU CH-M0ZM-M9XH0 MPN PH-GEF-RAD423_BK

A 420mm copper radiator with integrated 16mm EZ-Fit fittings and 19 FPI high-density fins for efficient custom-loop cooling

  • TypeRadiator
  • Radiator Size470x140x30 mm
  • Radiator MaterialFins: T2 Copper Water Chamber: H62 Brass Thread Insert: H59
  • ColorBlack
  • Tube MaterialH90 Brass
  • Integrated 16mm EZ-Fit fittings simplify hard or soft tubing builds
  • All-copper core with H90 brass tubes and T2 copper fins maximises heat dissipation
  • High-density 19 FPI fin layout increases surface area for heavy-load cooling
  • Steel outer frame adds rigidity and long-term durability
  • Standard M4 threads support 25mm and 30mm fans with included screws

Phanteks Glacier EZ-Fit 420mm Radiator

The Phanteks PH-GEF-RAD423_BK is a 420mm copper radiator designed for custom water-cooling loops. It integrates 16mm EZ-Fit fittings that accept both hard and soft tubing without extra parts. The all-copper core uses T2 copper fins and H90 brass tubes for efficient heat transfer. A steel outer frame adds rigidity for long-term durability in DIY builds.

Suits builders wanting integrated fittings

This radiator fits loops that use 16mm OD tubing and standard M4 fan mounts. It is not for systems that require larger or smaller fitting sizes, or for builders who prefer separate compression fittings. Cases without 420mm mounting space cannot accommodate the 470mm overall length. Loops designed for aluminium cores should avoid mixing metals with this copper construction.

19 FPI high-density copper fin stack

The 19 fins-per-inch arrangement maximises surface area across the 470x140x30mm core to dissipate heat under heavy loads. Combined with pure copper fins and brass water chambers, this fin density is the primary factor that determines cooling capacity in a given airflow configuration.

Highlights

  • Integrated 16mm EZ-Fit fittings simplify hard or soft tubing builds
  • All-copper core with H90 brass tubes and T2 copper fins maximises heat dissipation
  • High-density 19 FPI fin layout increases surface area for heavy-load cooling
  • Steel outer frame adds rigidity and long-term durability
  • Standard M4 threads support 25mm and 30mm fans with included screws

Specifications

BrandPhanteks
ModelPH-GEF-RAD423_BK
TypeRadiator
Radiator Size470x140x30 mm
Radiator MaterialFins: T2 Copper
Water Chamber: H62 Brass
Thread Insert: H59 Brass
Side Pane: 430 Stainless
Fittings: Brass
Fitting Insert: ABS
ColorBlack
Tube MaterialH90 Brass
Shipping weight1.34 kg
Package size521 × 152 × 47 mm

Questions about this item

Should I pick the 420 mm 30 mm thick radiator or a thinner model for my loop?

The 420 mm length with 30 mm thickness gives a 470x140x30 mm core that fits standard triple-fan mounts while providing more coolant volume than slimmer options.

What does the 19 FPI fin density actually deliver inside a running PC?

Nineteen fins per inch create a high surface area that moves heat from the copper fins into the airflow efficiently, even when fans run at lower speeds.

How do the integrated 16 mm EZ-Fit fittings limit tubing choices?

The built-in 16 mm fittings accept both hard and soft tubing with a 16 mm outer diameter, so no separate compression fittings are required.

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