-10AN to 18mm x 1.5 Metr ic Straight Adapter

The -10AN to 18mm x 1.5 Metric Straight Adapter is a precision hydraulic and fuel line fitting designed for applications requiring reliable conversion between AN (Army-Navy) standard connectors and metric ISO 4401 ports. This straight adapter serves custom fuel systems, high-performance engine builds, and industrial hydraulic setups where adapting legacy or aftermarket components to metric-threaded manifolds or components is essential. Built by Vibrant Performance, a trusted manufacturer of performance fluid handling solutions, this fitting eliminates the need for custom fabrication or incompatible workarounds.

The adapter features a -10AN male inlet (0.625-inch dash size) on one end and an 18mm x 1.5 metric male thread on the other, enabling direct connection between AN hose ends and metric port threaded locations. Constructed from aerospace-grade aluminum and finished in black anodized coating, the fitting provides excellent corrosion resistance and durability in fuel, coolant, and light hydraulic applications. The straight configuration eliminates flow restriction and vibration issues common to offset fittings, while the precision machining ensures leak-free sealing when paired with compatible AN hose assemblies and metric components rated for the intended pressure range.

This adapter is ideal for engine bay plumbing, transmission cooler lines, fuel distribution systems, and any custom or retrofit application bridging AN and metric component ecosystems. Installation requires compatible -10AN hose with JIC swivel ends on the AN side and a standard wrench or socket for the metric thread on the manifold or port side. Verify your system's operating pressure and fluid type before installation to ensure compatibility; this fitting is suitable for most fuel, coolant, and low-pressure hydraulic circuits in automotive and powersports applications.