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3/8” Barb Fittings

3/8” Barb Fittings

Hard tube compression fittings in the two common sizes, 13mm and 16mm outer diameter, all G1/4 thread.

Alphacool Apex Grip is the current range, in black and chrome, singly and in 6 packs. Eiszapfen knurled compression fittings and Eiszapfen PRO cover the same sizes in chrome and deep black, also in six packs, which is normally the sensible way to buy since a loop needs two per component. Barrow and Thermal Grizzly add further options.

Size by the tube outer diameter. 16mm OD hard tube takes a 16mm fitting, and a 13mm fitting will not close on it. Count the fittings before ordering: a radiator is 2, a CPU block is 2, a reservoir is 2, and it adds up faster than people expect.

Soft tube fittings are in fittings.