Bykski G 1/4in Male/Female Extension Coupler 20mm

Brass G 1/4in Extension for Custom Loops

This 20 mm brass coupler adds reach between any G 1/4in fittings in a custom water-cooling loop. Diamond knurling gives a secure hand grip when tightening or repositioning components. It suits builders who need a short spacer to clear tight routing paths. The part is sold new and intended for non-aluminum loops only.

Replacing Longer Rigid Spacers

Swap a fixed-length rigid extender for this coupler when only a small gap must be bridged. The 20 mm body plus thread keeps the assembly compact while still providing the needed offset. The jump is worth it when a longer spacer would force awkward bends or interfere with adjacent blocks. Avoid if the coolant is DI water based or a PrimoChill Opaque or VUE series fluid.

Fitting Into a Brass Fitting Chain

Thread the male end into a block or radiator port and the female end accepts the next G 1/4in fitting in the chain. The 25 mm overall height with thread fits most port depths without bottoming out. Brass construction matches common nickel-plated brass fittings for galvanic compatibility. It frees up routing options without adding bulky adapters.