3/8NPTF - 5/16in Push On EFI Black

The 3/8NPTF - 5/16in Push On EFI Black quick disconnect fitting from REDHORSE PERFORMANCE is engineered for fuel injection systems, hydraulic lines, and precision fluid transfer applications where reliability and leak-free performance are non-negotiable. This straight quick disconnect coupling is designed for professionals and enthusiasts who demand OEM-grade connections in custom fuel systems, EFI conversions, and high-performance engine builds. The push-on design eliminates the need for hose clamps or fittings tools, reducing assembly time while maintaining a secure, repeatable connection every time.

Constructed from aluminum and finished in black anodized coating, this fitting provides corrosion resistance and a professional appearance in engine bays and fuel cell installations. The 3/8 inch NPT male thread on one end mates with standard fuel system ports, while the 5/16 inch SAE male quick disconnect end accepts push-on hoses without additional hardware. The 813 Series quick disconnect design features a sealed interface that prevents fuel spillage during connection and disconnection, meeting the demands of modern EFI fuel systems that operate at varying pressures. Weighing just 0.065 lbs, the compact design integrates seamlessly into tight engine compartment layouts.

This fitting serves fuel system builders, automotive restorers converting carbureted engines to EFI, and performance tuners requiring secure, quick-disconnect connections. It is ideal for fuel pressure regulators, fuel rails, and distribution blocks where 3/8 NPT inlet ports are standard. Compatibility with 5/16 SAE push-on hose systems makes it an essential component for anyone fabricating or upgrading fuel delivery systems. Installation requires no special tools—simply push the hose onto the fitting until it seats fully, ensuring a professional-grade connection that withstands road vibration and temperature cycling.