3AN Male to Male Flare Union Clear

The 3AN Male to Male Flare Union Clear from REDHORSE PERFORMANCE is a precision-engineered hydraulic connector essential for custom fuel, coolant, and brake line installations on modified vehicles. Designed for serious builders and mechanics, this union serves as a critical junction point in high-pressure systems where reliability and leak-free performance are non-negotiable. Whether you're building a custom fuel system for a turbocharged engine, upgrading brake lines on a race car, or routing coolant through a custom loop, this fitting delivers the consistency expected in professional automotive fabrication.

The male-to-male configuration with flare connections on both ends allows seamless joining of two separate line runs or adapting between different circuit sections without requiring additional adapters. The clear identification of the 3AN sizing (commonly referenced as -3 in automotive hydraulic systems) ensures compatibility across your fuel, coolant, or brake system where consistent line diameter is critical to maintaining proper flow rates and pressure regulation. REDHORSE PERFORMANCE's flare design creates a metal-to-metal seal that withstands the vibration, thermal cycling, and pressure spikes common in modified engines, eliminating the weak points that cause system failures during high-performance driving or competition use.

This union is ideal for fabricators customizing fuel delivery on EFI conversions, builders installing secondary cooling circuits, and mechanics assembling modular brake systems on track-focused builds. The compact footprint and straightforward union design minimize clearance issues in engine bays packed with turbochargers, superchargers, or custom intake manifolds. Installation is straightforward—hand-tight plus a wrench turn is typically sufficient, though torque specs should follow system guidelines. Verify your line sizing before ordering; 3AN corresponds to 3/16-inch tubing, a standard in fuel and coolant applications but distinct from larger sizes used in main fuel rails or cooling headers.