1/4in NPT Female Pipe Coupler Blue

The 1/4in NPT Female Pipe Coupler Blue from REDHORSE PERFORMANCE (SKU RHP910-04-1) is a critical adapter fitting designed for builders and mechanics working with custom fuel, coolant, and pneumatic systems in high-performance vehicles. This straight-through female-to-female coupler serves as an essential component when routing hoses or hard lines between male NPT ports, eliminating the need for custom fabrication or oversized manifold blocks. Whether you're assembling a forced-induction fuel system, custom cooling loop, or air suspension setup, this coupler provides a reliable junction point that saves space and reduces assembly complexity.

Manufactured from 6061-T6 aluminum and finished with blue anodized coating, the 1/4in NPT Female Pipe Coupler delivers both durability and corrosion resistance in underhood environments. The blue anodizing is not merely cosmetic—it serves as a protective oxide layer that prevents oxidation and makes system identification easier during troubleshooting or future modifications. The 1/4-inch NPT (National Pipe Thread) female ports provide a tapered thread design that creates a pressure-tight seal without requiring additional sealant tape or compound, making installation straightforward for experienced technicians. At just 0.065 lbs and compact dimensions (2.8 x 1.1 x 3.7 inches), the coupler integrates seamlessly into tight engine bays or custom mounting locations without adding bulk or weight.

This coupler is ideal for custom automotive systems where standardized port configurations don't align with your plumbing layout—common in turbo fuel systems, remote fluid reservoirs, and custom air management setups. Automotive enthusiasts and professional builders rely on REDHORSE PERFORMANCE fittings for their consistency, repeatability, and pressure-rated reliability. Ensure all NPT connections on both sides are properly cleaned and inspected before assembly, and verify that the 1/4-inch thread size matches your existing ports to avoid cross-threading or leaks. The 910 Series straight coupler design guarantees minimal fluid restriction and is compatible with fuel, oil, air, and coolant applications up to standard automotive pressures.