BSPT Adapter Fitting -4AN To 1/4in - 19

The BSPT Adapter Fitting -4AN To 1/4in - 19 is a precision straight adapter designed to connect AN (Army-Navy) hose systems to BSPT (British Standard Pipe Taper) threaded ports. This fitting serves hydraulic, pneumatic, and fluid transfer applications across automotive, marine, and industrial equipment where thread compatibility between metric and imperial standards is required. It eliminates the need for custom fabrication or system redesigns when integrating components with mismatched port specifications.

Manufactured by Vibrant Performance, this adapter features a male 4AN connection on one end and a male 1/4-19 BSPT port on the other, machined from lightweight aluminum and finished in black anodized coating for corrosion resistance and durability. The straight design minimizes flow restrictions and pressure losses while maintaining a compact footprint; the black anodize protects against oxidation in both wet and dry environments. This configuration ensures reliable performance in high-pressure fuel systems, oil circuits, and coolant loops where thread seal integrity is critical.

Technicians and engineers working on engine swaps, custom cooling systems, and fuel system upgrades benefit most from this adapter when original equipment does not provide direct thread compatibility. Installation requires standard wrench or hose-fitting tools; the male BSPT connection typically pairs with female BSPT ports on manifolds, blocks, or radiator fittings. At 0.03 lbs and compact dimensions, it adds negligible weight while maintaining structural rigidity needed for vibration-prone automotive and marine environments.