#10 to #12 O-Ring Male Adapter Fitting w/Gauge

The #10 to #12 O-Ring Male Adapter Fitting with Gauge from MAGNAFUEL/MAGNAFLOW Fuel Systems is a precision fuel line component engineered for high-performance fuel system installations and modifications. This adapter serves as a critical junction point in custom fuel delivery systems, allowing seamless connection between different line sizes while maintaining system integrity under pressure. Whether you're building a carbureted hot rod, upgrading an EFI fuel rail, or diagnosing fuel delivery issues on a modified engine, this fitting bridges the gap between #10 and #12 AN line sizes—a common transition point in performance fuel systems.

Built with male O-ring sealing technology, this adapter eliminates the need for traditional thread sealants, providing a leak-free, reusable connection that withstands high fuel pressure cycles. The integrated gauge port allows real-time fuel pressure monitoring—essential data for tuning fuel delivery on carbureted engines or verifying regulator function on EFI systems. MAGNAFUEL's reputation for reliability in performance fuel systems means this fitting is constructed from quality materials designed to resist corrosion and handle the demands of both street and competition builds. The compact design (3.05 x 1.4 x 3.8 inches) fits tight engine bays without adding bulk, while the 0.14 lb weight contributes minimal mass to your fuel system plumbing.

Mechanics and engine builders regularly specify this adapter when transitioning fuel line sizes on custom fuel rails, upgrading from mechanical to electric fuel pump systems, or installing aftermarket fuel management components. Installation is straightforward—simply hand-tighten the O-ring fitting into compatible threaded ports and connect your AN-sized fuel lines. Verify all connections torque specifications per MAGNAFUEL guidelines to ensure system safety at operating pressure. This fitting pairs seamlessly with other MAGNAFUEL fuel system components and works equally well on carbureted, TPI, and modern EFI platforms. For serious fuel system work, stock this adapter in your shop inventory.