Straight Adapter Fitting ; Size: -3AN x 1/8in NPT

The Vibrant Performance Straight Adapter Fitting in -3AN x 1/8in NPT is a precision hydraulic and pneumatic connector designed to bridge two different thread standards in high-pressure fluid systems. This nickel-plated steel fitting serves as a critical junction point in fuel systems, brake lines, air suspension setups, and custom automotive plumbing where AN (Army-Navy) fittings must interface with standard NPT (National Pipe Thread) ports. The straight configuration eliminates bends and reduces turbulence, making it ideal for applications where direct port-to-port connections are required.

The -3AN designation refers to a hose ID of 3/16 inch, a standard size in mid-range fuel delivery and brake applications. The 1/8in NPT male thread on the opposite end allows connection to factory or aftermarket component ports that use national pipe thread specifications. Nickel plating provides corrosion resistance in engine bays and underbody environments while maintaining the structural integrity of the steel body. The compact 0.85-inch width and minimal weight (0.04 lbs) minimize installation footprint and system mass, critical considerations in performance and custom builds where every component is optimized.

This adapter is essential for builders and technicians integrating aftermarket fuel systems, custom brake lines, or air suspension components into vehicles where factory ports use NPT threading but the rest of the system runs AN-standard fittings. Vibrant Performance fittings are manufactured to precise tolerances to ensure leak-free operation under pressure cycling and vibration. The straight configuration is preferable to elbows when space permits, reducing restriction and turbulence in critical fuel delivery and hydraulic circuits. Proper installation requires appropriate wrenches and understanding of NPT sealing methods to ensure reliable performance.