Adapter Fittings -4 to 1/8 NPT 2pk

The ALLSTAR PERFORMANCE Adapter Fittings -4 to 1/8 NPT 2-pack (ALL 50001) is a straight adapter that converts 4 AN (Air and Nitrogen) male ports to 1/8-inch NPT (National Pipe Thread) male connections. These steel fittings with zinc oxide finish are engineered for hydraulic and pneumatic systems where AN line compatibility must interface with standard NPT threaded ports, making them essential for custom fuel systems, brake lines, air suspension setups, and industrial fluid transfer applications.

Constructed from steel with zinc oxide plating, these adapter fittings deliver corrosion resistance and structural integrity in demanding environments. The 4 AN to 1/8 NPT thread conversion accommodates systems combining modern -4 AN hose specifications with legacy or gauge-mounted 1/8-inch NPT components. A two-pack configuration provides redundancy for complex plumbing layouts or allows stocking spares for maintenance cycles. The straight geometry ensures direct port-to-port connection without offset, simplifying installation routing and reducing turbulence in pressure-critical circuits.

Buyers requiring AN-to-NPT adapter fittings typically operate custom-built race cars, hot rods, off-road vehicles, or industrial control systems where modular plumbing is necessary. Engine builders, suspension specialists, and hydraulic technicians rely on precision adapters to transition between different thread standards without compromise. These fittings serve applications ranging from fuel system tuning and turbo installations to pneumatic tool hookups and air brake assemblies where space constraints or component sourcing demands mixed thread standards.

ALLSTAR PERFORMANCE is recognized in the automotive aftermarket for developing cost-effective fasteners, fittings, and plumbing solutions that support both amateur and professional build projects. The -4 to 1/8 NPT adapter is a foundational component in any technician's fitting inventory, offering straightforward thread conversion without specialty tools or modifications.