Single Feed Holley #6

The Single Feed Holley #6 carburetor inlet fitting is a precision-engineered fuel line adapter purpose-built for high-performance and street engine builds that demand reliable fuel delivery to Holley carburetors. Whether you're restoring a classic muscle car, upgrading an existing carbureted engine, or building a custom hot rod, this straight inlet fitting bridges modern fuel system standards and legacy carburetor designs. Mechanics and enthusiasts rely on this component to eliminate fuel line confusion and ensure proper fuel supply without leaks or pressure mismatches.

Machined from lightweight aluminum and finished in durable blue anodizing, the Single Feed Holley #6 inlet fitting features a straight configuration that minimizes turbulence in fuel flow while maintaining structural integrity under typical carburetor fuel pressures. The dual-port design—6 AN male on the fuel line side and 9/16-24 inch male on the carburetor inlet side—establishes a seamless connection between aftermarket braided fuel lines and Demon or OEM Holley carburetor inlets. The anodized aluminum construction provides corrosion resistance and a professional appearance, while the compact footprint (2.4 x 1.1 x 3.7 inches) fits tight engine bays without interference. Weighing only 0.03 lbs, it adds negligible mass to your fuel system plumbing.

This fitting is ideal for Demon Carburetor installations, Holley carb swaps, and custom fuel system builds where AN-rated fittings provide superior reliability compared to legacy push-lock designs. Installers and engine builders choose AEROQUIP fittings for their tight tolerances, leak-proof seals, and compatibility with standard -6 braided hose assemblies. Proper installation requires a -6 AN fuel line (not included) on the inlet side and confirmation that your carburetor's inlet port accepts a 9/16-24 male thread. Use a fuel pressure regulator rated for your carburetor (typically 4–7 psi for Holley models) upstream to protect the system and ensure consistent jetting performance.