10AN to 6AN(3/8)NPT Union Adapter 90

The 10AN to 6AN (3/8) NPT Union Adapter 90 from REDHORSE PERFORMANCE is a precision-engineered hydraulic and fuel line fitting designed for high-performance automotive, marine, and industrial applications requiring a 90-degree directional change. This adapter serves as a critical junction component in custom fuel systems, turbo installations, and pressurized fluid circuits where space constraints or design geometry demands an angled transition between an AN-10 male port and a 3/8-inch NPT male port. Professional builders and enthusiasts rely on union adapters like this to simplify assembly, enable component repositioning, and maintain system integrity under demanding operating conditions.

Constructed from aluminum and finished in black anodize, the 822-series fitting combines lightweight durability with corrosion resistance essential for long-term reliability in harsh underhood or exposed environments. The 90-degree design allows fluid to change direction within a minimal footprint, critical when routing lines around engine bays, frame rails, or bulkheads where straight fittings would interfere. AN-10 (5/8-inch dash) threads accept standard JIC or NPT hose fittings with predictable torque characteristics, while the 3/8-inch NPT male port threads directly into NPT-ported blocks, manifolds, or remote filter heads without secondary adapters. The union-style construction permits field assembly and disassembly without breaking primary connections upstream or downstream, simplifying maintenance and system modifications.

This adapter is ideal for builders upgrading fuel delivery systems, installing aftermarket fuel regulators, or routing coolant and hydraulic lines in confined engine compartments. Weighing just 0.14 pounds and measuring 2.75 inches in length, it fits seamlessly into tight spaces without adding significant system weight. Compatible with both gasoline and diesel fuel systems, water, and light hydraulic fluids, the REDHORSE fitting delivers OEM-quality construction backed by the 822-series reputation for precision and durability. Installation requires standard wrenches and adherence to NPT thread sealant practices to ensure leak-free operation at working pressures typical of modern fuel injection and turbocharger cooling circuits.