12AN FM to 12AN FM 180Deg Swivel Coupler

The 12AN FM to 12AN FM 180Deg Swivel Coupler from REDHORSE PERFORMANCE is purpose-built for custom fuel, coolant, and brake line systems where space constraints or engine bay geometry demand directional flexibility. Whether you're routing lines around turbochargers, intercoolers, or custom headers in a high-performance build, this swivel coupling eliminates the need for multiple rigid fittings or hard lines that can kink under pressure. Designed for serious enthusiasts and professional fabricators, this coupler lets you run AN plumbing with precision while maintaining full flow integrity under demanding conditions.

This fitting features a 180-degree swivel design that allows lines to rotate freely without loosening the connection, a critical advantage when installing or servicing tight engine compartments. The 12AN (12-JIC) male-to-male configuration ensures reliable SAE J518 compatibility across OEM and aftermarket hose assemblies, while the swivel mechanism pivots on precision ball-bearing internals that handle vibration and thermal cycling without play or leakage. REDHORSE PERFORMANCE's anodized aluminum construction resists corrosion and maintains a professional appearance, and the compact 3.825-inch overall length keeps package weight minimal at just 0.205 lbs—critical when every gram counts in race or street applications.

This swivel coupler excels in fuel system upgrades, coolant bypass plumbing, and brake line re-routing on turbocharged, supercharged, or heavily modified vehicles where hose runs don't follow stock paths. Install it with standard 12AN hose crimps or adapters to redirect flow around custom manifolds, intake manifolds, or chassis-mounted components without resorting to fragile steel tubing that can fatigue crack under engine vibration. Mechanics and fabricators trust REDHORSE fittings for consistency and leak-free performance in high-pressure circuits, making this coupler an essential addition to any serious build where reliability and serviceability matter.