Push-On EFI Fitting #6 to 5/16in Hard Tube Blck

The Push-On EFI Fitting #6 to 5/16in Hard Tube Blck from RUSSELL is a precision adapter designed for fuel injection and fluid transfer systems that demand reliable, leak-free connections. This straight-port fitting transitions from 6 AN male threads to a 5/16-inch SAE female quick-disconnect port, making it essential for custom fuel system builds, EFI conversions, and high-performance engine swaps. Whether you're upgrading a classic hot rod, installing a fuel injection system, or connecting high-pressure hose assemblies, this adapter bridges incompatible port standards with confidence.

Manufactured from aluminum and finished in black anodize, this fitting resists corrosion while maintaining a clean, professional appearance in engine bays. The anodized surface protects against oxidation and fuel degradation, critical in systems exposed to ethanol blends and variable temperatures. The push-on design eliminates complex nut-and-ferrule assembly, reducing installation time while the SAE quick-disconnect female port allows rapid coupling and uncoupling without fluid spillage—ideal for maintenance-heavy applications or modular fuel system configurations.

Technicians and enthusiasts working with AN-spec fuel lines and hard-tube fuel systems benefit most from this adapter, particularly when retrofitting older vehicles with modern EFI components or building custom fuel delivery networks. The compact 2.7-inch length and lightweight 0.08-pound construction fit tight engine compartments without adding bulk. Install this fitting with AN-rated hose and quick-disconnect couplers to ensure system compatibility and prevent costly leaks under pressure.