BSPT Adapter Fitting -4AN To 1/8in - 28

The BSPT Adapter Fitting -4AN To 1/8in - 28 by VIBRANT PERFORMANCE is a precision straight adapter designed to bridge AN (Army-Navy) and BSPT (British Standard Pipe Taper) threaded connections in hydraulic, fuel, and fluid transfer systems. This adapter is essential for technicians, mechanics, and performance enthusiasts who need to integrate components with different thread standards—common in custom fuel systems, cooling loops, and aftermarket automotive applications. By converting a 4AN male port to a 1/8-inch BSPT male connection, this fitting eliminates the need for costly custom fabrication or incompatible workarounds.

Constructed from aluminum and finished in black anodize, this straight adapter delivers reliability and corrosion resistance in demanding environments. The black anodized coating protects against oxidation while maintaining a professional appearance in engine bays and visible installations. The straightforward design—no elbows or complex geometry—minimizes flow turbulence and pressure loss, critical for systems where flow consistency matters. The precise 4AN-to-1/8-28 BSPT conversion ensures proper sealing with appropriate thread sealant, making it compatible with both metric and imperial-standard fluid systems found in European and domestic platforms alike.

This adapter is ideal for custom fuel system builders, engine swap specialists, and those upgrading cooling or hydraulic components across vehicle platforms. Whether you're relocating injectors, rerouting coolant lines, or integrating aftermarket gauges, the BSPT Adapter Fitting provides a compact, lightweight solution that weighs just 0.02 lbs and fits easily into tight engine bay spaces. Installation requires only hand tools and appropriate thread sealant—no special equipment needed. This is a one-piece adapter, sold individually, making it perfect for single-connection upgrades or as a replacement component in modular fluid systems.