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

The 10AN to 6AN (3/8) NPT Union Adapter 90 from REDHORSE PERFORMANCE is a crucial hydraulic fitting designed for automotive plumbing systems. This 90-degree elbow adapter effectively bridges two different port sizes and thread standards, making it essential for routing fuel lines, coolant passages, or brake fluid circuits in various engine builds and modifications.

Engineered for high-pressure applications, this adapter features a 90-degree union design that allows for flexible line routing in tight spaces, preventing hard-angle bends that could compromise hose integrity or restrict flow. The 10AN male connection is compatible with standard -10 hose and fittings, while the 6AN (3/8) NPT female port threads directly into factory or custom manifold bosses, minimizing leak points.

This adapter is particularly beneficial for mechanics and fabricators working on turbo systems, LS swaps, or high-flow cooling upgrades, as it effectively addresses port-size mismatches between aftermarket components and existing plumbing setups. Its compact profile of 2.75 x 1 x 3.8 inches allows for seamless integration into congested layouts without requiring significant rerouting of adjacent lines.