#16 Fem x #20 Male Swivel Reducer

The #16 Female x #20 Male Swivel Reducer from FRAGOLA is a precision hydraulic adapter designed for experienced fabricators and performance shops building custom fuel, coolant, or brake system plumbing. This straight adapter solves a common sizing challenge when downsizing from larger -20 AN lines to smaller -16 AN connections, eliminating the need for multiple fittings or improvised solutions. Whether you're upgrading fuel delivery on a fuel-injected engine swap or refining a vintage restoration, this reducer maintains system integrity while keeping your layout clean and professional.

Manufactured from aluminum and finished in FRAGOLA's signature blue anodize, the #16 Female x #20 Male Swivel Reducer combines corrosion resistance with reliable pressure containment. The swivel design on the female end allows for precise alignment during installation, reducing torque stress on adjacent fittings and preventing cross-threading on delicate ports. At just 0.27 lbs and compact 3.75-inch length, this fitting integrates seamlessly into tight engine bays and frame-mounted fuel or cooling systems without compromising hose routing or clearance. The straight configuration ensures minimal turbulence and pressure loss, critical when supporting high-flow fuel pumps or performance cooling circuits operating at elevated pressures.

Mechanics and fabricators working on LS swaps, fuel system upgrades, or vintage EFI conversions rely on this adapter to bridge mismatched system components with OEM-quality reliability. The -16 to -20 transition is industry-standard in performance circles, where fuel rails, return lines, and cooler circuits often spec different nominal sizes. Installation is straightforward—thread the -20 male end into your larger system port and crimp or flare your -16 hose to the female swivel end, then torque to specification per FRAGOLA guidelines. Pair with matching -16 AN hoses and fittings to complete a leak-free, professional fuel or cooling layout.