-6an S/S Coupler to Ford Return Line

The Aeromotive -6AN Stainless Steel Coupler to Ford Return Line (part number 15101) is a precision fuel line adapter engineered to connect -6AN male fittings to Ford's 3/8-inch male spring lock return lines. This stainless steel fitting is built for high-performance fuel system applications where reliability and corrosion resistance are non-negotiable, particularly in custom fuel injection installations, fuel system upgrades, and engine swap projects requiring OEM-compatible return line integration.

Manufactured from stainless steel in a natural finish, this coupler eliminates compatibility gaps between modern -6AN fuel system components and original Ford fuel return line infrastructure. The spring lock connection method ensures a secure, pressure-rated seal without requiring additional tools or clamps. Weighing just 0.08 lbs and measuring 2.65 x 1.25 x 3.75 inches, the fitting integrates seamlessly into tight engine bay layouts. The straight configuration minimizes flow turbulence and pressure drop across the connection point, critical for maintaining proper fuel system regulation and preventing vapor lock in high-performance applications.

This adapter is essential for builders transitioning to aftermarket fuel injection systems, EFI conversions on classic Ford platforms, or upgrading return line diameter without replacing OEM Ford fuel tank components. Aeromotive's reputation for precision fuel system engineering makes this fitting a trusted choice among fuel system specialists, engine builders, and performance automotive technicians. The stainless steel construction resists corrosion in fuel environments and extends service life across seasonal storage and varying climate conditions.

If you're sourcing Aeromotive fuel system components or need Ford return line adapters for -6AN plumbing, this coupler delivers OEM compatibility with modern performance standards. Available now at TacticalSurplusUSA for immediate shipping.