1/4in NPT Male Pipe Union Blue

The 1/4in NPT Male Pipe Union Blue from REDHORSE PERFORMANCE is a critical fluid-line connector designed for custom automotive fuel, coolant, and vacuum systems. Whether you're building a high-performance engine bay, custom fuel delivery setup, or upgrading hydraulic brake lines, this union fitting serves as the essential junction point where rigid and flexible hoses meet. Built for reliability in demanding automotive environments, this compact fitting ensures leak-free performance under pressure.

Precision-engineered with NPT (National Pipe Thread) male threads, the 1/4in union delivers secure, predictable sealing that withstands thermal cycling and vibration inherent to engine compartments. The blue anodized finish provides corrosion resistance and quick visual identification in complex plumbing layouts—critical when diagnosing or servicing intricate fuel systems. REDHORSE PERFORMANCE's manufacturing standards ensure concentricity and thread accuracy that eliminate micro-leaks common with inferior fittings, maintaining system integrity across a wide temperature and pressure range.

Mechanics and engine builders rely on this union for fuel rail reconfiguration, EFI conversions, and custom nitrous oxide plumbing on street and race vehicles. Its compact 1/4-inch port accommodates standard hose and tube diameters without requiring adapter cascades. Install with PTFE thread sealant tape or approved pipe dope, torque fittings evenly to prevent thread galling, and verify all connections before pressurizing the system. Compatible with fuel, coolant, oil, and non-corrosive hydraulic fluids.