4AN to 2AN(1/8)NPT Union Adapter 90

The REDHORSE PERFORMANCE 4AN to 2AN (1/8) NPT Union Adapter 90 is a precision-engineered hydraulic and fuel line fitting designed for high-pressure fluid transfer applications in racing, off-road vehicles, and performance engine builds. This 90-degree adapter enables reliable connections between 4 AN male ports and 1/8-inch NPT male threads, making it an essential component for custom plumbing layouts where space or angle constraints require offset connections.

Manufactured from aluminum and finished in blue anodized coating, this fitting combines lightweight construction with corrosion resistance—a critical advantage in wet environments or applications exposed to fuel vapor and moisture. The 90-degree configuration eliminates sharp bends in AN hose runs, reducing friction losses and improving system cleanliness by minimizing turbulence in fuel or coolant lines. The combination of 4 AN male threads with 1/8 NPT male outlet allows flexible system integration, whether connecting to OEM gauge ports, pressure sensors, or custom manifold configurations. Compact dimensions (2.75 x 1.05 x 3.8 inches) ensure fitment in tight engine bays where traditional straight adapters would interfere with adjacent components.

This adapter serves engine builders, fabricators, and performance enthusiasts who demand precise port compatibility and leak-free operation under sustained high pressure. It is particularly valuable in fuel system upgrades, intercooler plumbing, oil system modifications, and custom cooling loops where AN-to-NPT transitions must navigate confined spaces. REDHORSE Performance fittings are engineered to AN/MS specifications, ensuring dimensional accuracy and repeatable performance across multiple applications.

Whether upgrading a naturally aspirated engine's fuel delivery or integrating aftermarket sensors into a turbocharged platform, this union adapter provides the offset and thread conversion required for professional-grade system design without compromise on pressure rating or reliability.