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

The BSPT Adapter Fitting -4AN To 1/8in - 28 by Vibrant Performance is designed to bridge two common thread standards used in custom fuel, oil, and coolant systems. This fitting is ideal for mechanics and automotive enthusiasts who are upgrading fuel delivery systems, installing aftermarket turbo kits, or plumbing custom engine bays.

This adapter fitting features a -4AN male connection that accepts standard -4 braided hose or hard-line tubing, while the 1/8-inch BSPT female port is compatible with components designed for this specific thread size. The tapered thread design of BSPT eliminates the need for separate washers, creating a reliable seal when tightened to the proper torque specifications. Made from aluminum alloy, this fitting offers lightweight durability and corrosion resistance suitable for both street and race applications.

Builders upgrading fuel systems on turbocharged vehicles, installing auxiliary oil coolers, or connecting aftermarket fuel pressure regulators to factory ports will find this adapter essential. The precision machining ensures consistent thread engagement and minimizes the risk of cross-threading, making it a dependable choice for technicians performing engine swaps.