Union AN Male -4

The ALLSTAR PERFORMANCE Union AN Male -4 is a straight-through AN adapter fitting designed to connect two 4 AN male ports in hydraulic and fuel line systems. Constructed from aluminum with black anodized finish, this adapter provides a straightforward, corrosion-resistant solution for custom high-pressure fluid distribution in performance and racing applications. The adapter's 4 AN male-to-male configuration makes it essential for builders working with standardized AN fittings across motorsports, automotive tuning, and industrial hydraulic systems.

AN (Army-Navy) thread standards ensure compatibility across the full spectrum of aftermarket fuel and hydraulic components. The black anodized aluminum finish resists corrosion and oxidation in aggressive underhood environments—a critical factor in high-heat engine bays and marine applications where salt spray accelerates material degradation. The straight configuration minimizes flow turbulence and pressure loss, making it ideal for precision fuel delivery and cooling circuits where efficiency directly impacts performance and reliability. Lightweight construction reduces overall system weight without sacrificing structural integrity under high-pressure operating conditions.

This adapter serves racers, engine builders, and custom fabricators assembling bespoke fuel, oil, and coolant circuits. Whether extending line runs, correcting port misalignment, or consolidating multiple fittings into a single junction point, the AN adapter simplifies plumbing challenges in tight engine compartments. Serious enthusiasts building stroker engines, turbo systems, or standalone fuel management setups depend on ALLSTAR Performance components for proven fitment and durability. The individual unit format allows builders to purchase exactly what they need without excess inventory.