#12 Female x #10 Male Swivel Reducer Black

The #12 Female x #10 Male Swivel Reducer Black from Fragola is a critical hydraulic adapter for custom fuel, coolant, and brake line systems in performance and street rod builds. Whether you're installing a custom fuel injection setup, upgrading cooling lines on a boosted engine, or fabricating a complete brake system overhaul, this reducer bridges size mismatches between AN12 and AN10 components. Builders and mechanics rely on these adapters to maintain system integrity while adapting off-the-shelf components to unique platform layouts.

This swivel-style reducer features a 360-degree rotating design that eliminates the need for additional hose bends and reduces stress on fittings during installation and vibration cycles. The female #12 end accepts AN12 hose ends, while the male #10 outlet threads into AN10 ports, delivering precise flow transitions without dead spots or turbulence. Crafted in black anodized aluminum, Fragola's construction withstands high-pressure fuel systems, coolant circuits, and brake applications while resisting corrosion in engine bays. The swivel connection allows installers to angle and position the adapter freely, making tight-clearance engine bays and modified chassis layouts far more manageable.

This adapter excels in LSx swaps, LS turbocharged conversions, custom cooling circuits, and fuel system modifications where OEM ports don't align with aftermarket component sizing. Engine builders routinely deploy these reducers when integrating modern fuel rails, remote coolers, and modified radiator inlets into older or heavily modified platforms. Installation is straightforward—thread the male #10 end into your receiving port and connect your AN12 hose line to the female end. Ensure proper sealing with appropriate thread sealant on NPT threads, and torque all connections to manufacturer specs to prevent leaks under load.