Swivel Coupling Fitting 4an Female Straight

The EARLS Swivel Coupling Fitting 4AN Female Straight (SKU: EARAT915104ERL) is a precision hydraulic adapter designed for high-pressure fluid line systems where reliable connections are non-negotiable. This adapter bridges two 4 AN female swivel ports in a straight configuration, making it ideal for fabricators, mechanics, and enthusiasts building custom fuel, oil, coolant, or brake systems. By eliminating the need for separate hoses between two female fittings, this coupling fitting streamlines plumbing layouts and reduces potential leak points in performance and racing applications.

Engineered from aerospace-grade aluminum and finished in black anodized coating, the Swivel Coupling Fitting 4AN Female Straight provides corrosion resistance and durability across demanding environments. The swivel design on each end allows ±15° articulation, accommodating slight misalignment during installation and reducing stress on connected hoses and fittings. This engineering feature prevents premature failure and leakage—critical when working with pressurized systems. The compact footprint (0.9 × 0.85 × 2.95 inches, weighing just 0.03 lbs) ensures it fits tight spaces without compromising structural integrity or flow capacity.

Professional fabricators, drag racers, hot rod builders, and custom automotive technicians rely on EARLS fittings to meet SAE and JIC standards in both street and competition applications. The straight configuration works seamlessly in systems where parallel hose runs are preferred, and the swivel female-to-female design accommodates existing 4 AN female quick-disconnects or hard-line adapters. Installation requires no special tools—hand-tightening with a wrench ensures a leak-free seal. Whether upgrading fuel delivery on a modified engine or designing a complete custom cooling circuit, this adapter delivers the precision fit and reliability that separates amateur builds from professional-grade systems.