Straight Adapter Fitting ; Size: -6 AN x 1/8in NP

The Straight Adapter Fitting in -6 AN x 1/8 in NP configuration is a precision fluid-line adapter engineered for professional-grade fuel, oil, and coolant system modifications. Built by Vibrant Performance, a leader in automotive plumbing solutions, this fitting serves as the critical bridge between AN-spec hard lines and NPT port connections found on engine blocks, fuel rails, transmission coolers, and aftermarket manifolds.

Whether you're upgrading a carbureted engine's fuel delivery, integrating a remote oil filter mount, or routing coolant through a custom radiator setup, this adapter eliminates port mismatches and ensures leak-free operation under sustained pressure and temperature cycling. This straight adapter features a -6 AN (06-size) outlet that mates with standard -6 braided hose or hard aluminum tube, paired with a 1/8 inch NPT (National Pipe Thread) port designed to seal directly into tapped engine components without additional bulkhead fittings or adapters.

The NPT profile uses tapered threads that create a metal-to-metal seal, eliminating the need for separate O-rings on the adapter side and reducing assembly complexity during installation. Vibrant Performance's precision machining ensures concentricity between the AN and NPT sides, preventing turbulence and pressure loss across high-flow applications. The compact design makes it ideal for tight engine bays where space is at a premium, allowing fabricators to optimize their setups.