Female Straight Union Adapter -20AN

The Female Straight Union Adapter -20AN from VIBRANT PERFORMANCE is an essential fitting for high-flow fuel, oil, and coolant line systems in custom engine builds and performance modifications. As a mechanic working on turbocharged and supercharged applications, this adapter serves as a critical junction point where two hose lines meet end-to-end, allowing seamless fluid transfer without dead spots or turbulence. Whether you're plumbing a new fuel rail system, upgrading to larger diameter lines, or consolidating multiple smaller circuits into a single regulated path, this straight union adapter eliminates the need for bulkier T-fittings when a direct connection is all you need.

Constructed with precision engineering, the -20AN designation indicates a SAE J518 20-micron hose port that accepts standard -20 hose barbs or JIC fittings on both ends. The female configuration on both sides means you'll connect male-threaded line ends directly into each port, creating a leak-free union joint under pressure. VIBRANT PERFORMANCE's reputation for durability ensures this adapter withstands sustained high-pressure cycles common in forced-induction setups—typically rated for continuous operation in the 100+ PSI range depending on your fluid type and line material. The compact straight design minimizes flow restriction and reduces complexity in tight engine bay layouts.

This adapter is ideal for enthusiasts building custom fuel systems, upgrading factory cooling circuits, or running secondary oil cooler lines on LS, 5.0 Coyote, and EJ-platform engines. Installation is straightforward—apply thread sealant tape or liquid sealant to the male fitting ports, then thread firmly into each female port until hand-tight, then an additional quarter-turn with a wrench to lock. Always use matching -20AN hose ends and verify that your fittings and hose are ISO-rated for your system's maximum operating pressure before start-up to ensure reliability and safety.