6AN Male to 3/8 Inch Quick Disconnect Female EFI Fuel Rail Fitting Aluminum 6061-T6, Sealed at 37 Degree Flare, 1500 PSI Working Pressure, -40 to 250 F, Automotive EFI Fuel Line Connector
✔️ 9/16-18UNF thread (14.3mm), 3/8ID (9.5mm), 37° seal, 1500 PSI
This EFI fuel rail fitting is built from aluminum alloy 6061-T6 and seals at a 37-degree flare to keep fuel lines leak-free under high pressure. It's commonly used on engine fuel rails, LS swaps, and EFI feeds in performance builds.
✅ Thread size: 9/16-18UNF (14.3mm), 3/8 ID (9.5mm)
✅ Material: Aluminum 6061-T6, color Black
✅ Seal: 37-degree flare seal for leak-free operation
✅ Working pressure: 1500 PSI, Temperature range: -40°F to 250°F
✅ Applications: EFI fuel rail, LS swap, sensor lines, return line
💡 What is an EFI fuel line fitting used for in automotive systems? This handy piece connects fuel rails to supply lines and seals under high pressure. - high-pressure fuel routing in EFI setups - lightweight aluminum body improves installation and performance - 37-degree flare seal prevents leaks across the temperature range - compatible with 6AN and 3/8in lines for common EFI layouts