Y-Block Fitting - 6an to 2 x -6an

The Aeromotive Y-Block Fitting – 6AN to 2 x -6AN (Part No. 15672) is a precision aluminum manifold designed for high-performance fuel system applications requiring flow distribution from a single 6AN inlet to dual 6AN outlets. The black anodized finish provides corrosion resistance and a clean aesthetic in engine bays, while the aluminum construction keeps weight minimal. This fitting is engineered for systems running carbureted or fuel-injected engines where fuel demand exceeds single-line capacity, making it essential for dual-fuel-pump setups or complex fuel distribution architectures.

Y-block fittings serve as junction points in fuel systems, consolidating supply lines or splitting flow between independent circuits. The 6AN inlet accommodates standard fuel line hose and adapters rated for high-pressure pump discharge, while the dual 6AN outlets allow connection to two separate fuel rails, return manifolds, or auxiliary systems. The male-to-male configuration ensures compatibility with 6AN hose fittings and adapters commonly found in street performance, racing, and motorsport fuel systems. Aeromotive's reputation for precision manufacturing means tight tolerances and consistent thread fit across production runs.

This fitting is ideal for builders upgrading fuel delivery on carbureted hot rods, LS swaps, or fuel-injected engine conversions where OEM fuel rails cannot accommodate higher flow rates or system complexity. It is also essential for auxiliary fuel system layouts, boost-referenced fuel pressure regulators, and tuned vacuum-operated controls. The compact dimensions (2.65 × 1.25 × 3.8 inches) allow installation in tight engine-bay spaces without requiring extensive plumbing reroutes. Users integrating high-flow mechanical fuel pumps, dual-pump EFI systems, or performance carburetors with external regulators will find this manifold a critical component for proper circuit distribution.

Aeromotive Y-block fittings are produced to SAE specifications and designed for system pressures typical of modern fuel delivery (up to 70+ PSI on most carb and EFI systems). Proper AN-rated hose and adapters must be used throughout the system to ensure safety and prevent leaks. The black anodized aluminum resists oxidation in humid or salt-air environments, making it suitable for both street and marine applications.