#12 Female x #10 Male Swivel Reducer

The #12 Female x #10 Male Swivel Reducer from Fragola is an essential fitting for custom fuel, oil, and coolant line systems in automotive builds where space, pressure containment, and directional routing are critical. This adapter reducer bridges two different AN-sized ports, allowing technicians to downsize from larger #12 lines to smaller #10 connections without sacrificing flow efficiency or system integrity.

The swivel design is the key advantage here—the fitting rotates freely at the connection point, allowing you to angle your hoses or hard lines without twisting the main line itself, reducing stress on welds and crimps during installation and operation. Fragola's engineering ensures consistent internal bore sizing to minimize turbulence and pressure drop across the transition, critical when working with high-flow fuel systems or precision cooling circuits.

Experienced fabricators and engine builders rely on this reducer when downsizing fuel lines to carburetors, EFI pumps, or remote-mounted fuel filters. Its lightweight design of 0.15 lbs makes it ideal for tight engine compartments where every millimeter counts, ensuring a clean and compact plumbing solution.