#6 Female Swivel to 3/8mpt Fitting

The #6 Female Swivel to 3/8mpt Fitting from FRAGOLA (SKU FRG499366) is a precision adapter engineered for custom hydraulic and fuel line systems in high-performance automotive builds. This straight-port adapter bridges 6 AN female swivel connections to 3/8 inch NPT male ports, making it essential for fuel system upgrades, brake line modifications, and turbo installations where OEM port sizes don't align with modern performance plumbing standards. Mechanics and fabricators rely on this fitting to eliminate costly custom machining and enable rapid system integration in tight engine bays.

Constructed from lightweight aluminum with blue anodized finish, the #6 Female Swivel to 3/8mpt Fitting delivers corrosion resistance and visual clarity for identifying system sections during maintenance. The swivel female end allows 360-degree rotation, reducing stress on hose assemblies during installation and preventing hose kinking under engine vibration—critical when running high-pressure fuel systems or brake circuits. The 3/8 inch NPT male port threads directly into factory or aftermarket components, providing a leak-free seal when paired with appropriate thread sealant and ensuring reliable flow under boost or sustained hydraulic pressure.

This adapter excels in street and race engine bay conversions, including LS engine swaps, fuel cell relocations, and custom brake system fabrication. The swivel design is particularly valuable when space constraints prevent parallel hose runs or when vibration isolation is non-negotiable. Install using PTFE thread tape and a flare wrench to avoid stripping the delicate 6 AN swivel body; always verify pressure ratings against your system's maximum PSI before assembly to ensure component longevity and safety.