3AN to 4AN 1/4NPT Straight Male to Male

The REDHORSE PERFORMANCE 3AN to 4AN 1/4NPT Straight Male to Male adapter fitting is a precision-engineered hydraulic and pneumatic line connector designed to bridge incompatible port sizes in high-pressure fluid systems. This 816 Series straight adapter converts a 3 AN male port to a 1/4 inch NPT male connection, enabling seamless integration between different fitting standards commonly found in performance fuel systems, brake lines, air suspension circuits, and industrial hydraulic applications. The aluminum construction with black anodized finish provides corrosion resistance and durability in demanding environments.

This straight male-to-male configuration ensures direct flow without elbows or bends, minimizing pressure drop and turbulence across the connection point. The 3 AN side accepts standard -3 hose and fittings, while the 1/4 NPT male end threads into standard pipe ports found on reservoirs, gauges, filters, and manifold blocks. The anodized aluminum body resists fluid degradation and oxidation, maintaining integrity under continuous exposure to oils, coolants, and environmental moisture. Compact at 2.75 inches in length, this adapter occupies minimal space in tight engine bays and equipment enclosures.

Buyers upgrading fuel delivery systems, building custom cooling circuits, or retrofitting older equipment to modern hose standards rely on adapters like this to maintain system compatibility without fabricating custom solutions. The straight design is particularly valuable in applications where flow velocity must be preserved and connection angles are constrained. This fitting is sold individually and represents a critical component in any modular hydraulic or fuel system assembly.

REDHORSE Performance specializes in precision fluid-handling fittings for racing, marine, and automotive markets where leak-free, high-pressure connections are non-negotiable. The 816 Series is their standard straight adapter line, engineered for repeatability and load-bearing capacity across thousands of installations.