16AN Male to Male Flare Black

The 16AN Male to Male Flare Black fitting by Redhorse Performance is a critical hydraulic connection component designed for high-pressure fuel, oil, and coolant systems in performance and race-built engines. This adapter bridges two male AN ports, eliminating the need for separate hose assemblies and reducing connection points where leaks commonly occur. Whether you're building a custom fuel rail, remote oil cooler setup, or high-flow cooling circuit, this flare fitting provides the secure, leak-proof junction serious engine builders demand.

AN fittings use a 37-degree flare seat that creates a metal-to-metal seal far superior to O-ring designs under extreme pressure and temperature cycles. The 16AN size handles flows demanded by twin-turbo fuel systems, dedicated transmission coolers, and high-volume dry-sump configurations without flow restriction. Redhorse Performance's black anodized aluminum construction resists corrosion in engine bay environments while maintaining the lightweight profile essential for weight-conscious builds. The precisely machined flare geometry ensures repeatable, vibration-resistant seals that won't weep even under sustained boost or sustained high-rpm operation.

This fitting excels in custom fuel system layouts, aftermarket cooler installations, and competition vehicles where reliability under stress is non-negotiable. Installation requires only a wrench and proper flare-nut technique—no special tools or thread sealant needed when the flare seats correctly. Compatible with any 16AN hose, filter, valve, or manifold port, this adapter integrates seamlessly into your plumbing strategy, whether you're street-tuning a daily driver or prepping for the track. The compact 3.825-inch length fits tight engine bays without fouling headers or intake runners.