-10AN to 16mm x 1.5 Metr ic Straight Adapter

The -10AN to 16mm x 1.5 Metric Straight Adapter by Vibrant Performance is a precision hydraulic fitting designed for high-performance fuel, oil, and coolant system plumbing in modified vehicles. This adapter bridges the gap between -10AN (JIC) hose ends and metric threaded ports common on aftermarket fuel rails, turbochargers, oil coolers, and engine management systems. Whether you're upgrading fuel delivery on a turbocharged engine, installing auxiliary cooling systems, or integrating an external oil filtration setup, this straight adapter provides a leak-free, vibration-resistant connection point that meets the demands of serious automotive enthusiasts and professional tuners.

Manufactured with precision-machined aluminum and stainless steel internals, the -10AN to 16mm x 1.5 Metric Straight Adapter features a 16mm x 1.5 metric thread pitch—a standard metric fitting found on many European and Japanese high-performance components. The straight configuration eliminates flow restrictions and minimizes turbulence, critical for fuel system applications where pressure drop translates directly to engine performance loss. Vibrant Performance's manufacturing tolerances ensure proper sealing with industry-standard -10AN JIC fittings, while the metric end threads cleanly into threaded ports without requiring bulky adaptor blocks that steal underhood real estate and complicate installation geometry.

This adapter is ideal for builders working with turbocharged, supercharged, or naturally aspirated engines that feature metric fuel system ports—particularly common in newer Nissan, Subaru, Mitsubishi, and European platform modifications. It's equally effective for custom oil cooling circuits, secondary fuel pressure regulation, and boost-referenced fuel dampener installations. Installation requires only a wrench and basic knowledge of threaded fitting procedures; always use thread sealant rated for fuel or oil applications, and verify that the metric port threads cleanly before assembly. Compact at 3.25 inches in length and weighing just 0.06 pounds, this adapter integrates seamlessly into tight engine bays without compromising accessibility or clashing with neighboring components.