Adapter Straight #6 Flare 1/8in NPT

The Adapter Straight #6 Flare 1/8in NPT from A-1 PRODUCTS is a precision hydraulic and pneumatic fitting designed for boat fuel systems, engine cooling loops, and marine hydraulic installations. If you've spent years on the water, you know that fuel and fluid line integrity is non-negotiable—a single leak under load can turn a productive day into a safety emergency.

This adapter bridges the gap between two industry-standard connection types, allowing you to mate #6 SAE flare connections with 1/8-inch NPT (National Pipe Thread) ports without compromising pressure ratings or reliability. Constructed to handle the demands of marine service, this straight adapter features a straight-through bore that minimizes turbulence and pressure drop across the connection. The #6 flare end uses a 37-degree cone seat—the industry standard for SAE flare fittings—while the NPT side employs tapered male threads that create a mechanical seal when torqued into a female NPT port.

Anglers and boat operators restoring or upgrading fuel delivery systems, coolant circulation, and trim/tilt hydraulics will find this adapter invaluable for mixed-standard plumbing runs. A-1 PRODUCTS maintains strict tolerances on both ends to ensure leak-free operation even under the vibration and thermal cycling that marine engines routinely endure. The compact 2.9 x 0.65 x 4.6 inch form factor fits tight engine compartments and fuel system cavities without requiring extensive rerouting of existing lines.