Thermaltake CL-W046-CU00BL-A Pacific DIY Cooling G1/4 Female to Male 20mm Extender Fitting

G1/4 Extender for Custom Loops

The Thermaltake Pacific CL-W046-CU00BL-A is a 20 mm G 1/4 female-to-male extender fitting designed for DIY liquid-cooling builds. It adds clearance between components such as blocks, radiators or reservoirs when standard fittings sit too close together. The black chrome-plated brass body suits custom loops that use G 1/4 threading throughout.

Brass Construction With Pre-Installed Seal

The fitting is machined from copper alloy and finished in black chrome for corrosion resistance. A pre-installed O-ring seats automatically when the G 1/4 threads are tightened, removing the need to handle separate seals during assembly. At 22 mm wide and 25 mm tall it occupies minimal space inside crowded chassis while the 47 g weight adds negligible load to tubing runs.

Passive Component With No Flow Restriction

As a passive metal extender it introduces no moving parts, pump load or electrical draw. The straight-through bore maintains high flow rates without adding audible turbulence. Thermal performance of the loop is unchanged because the fitting simply bridges two G 1/4 ports without altering coolant path or volume.