6AN Female to 6AN Female 180Deg Swivel Coupler

The 6AN Female to 6AN Female 180Deg Swivel Coupler by Redhorse Performance is an essential fitting for custom fuel, oil, coolant, and hydraulic line installations where directional flexibility is critical. Built for serious automotive builders and mechanics, this swivel coupler allows you to connect two -6AN female ports at a full 180-degree angle, eliminating the need for bent tubing or complex routing workarounds. Whether you're designing a tight engine bay fuel system, integrating a turbo oil return line, or plumbing a custom cooling circuit, this coupler solves real-world installation constraints that rigid fittings cannot.

Engineered from proven aluminum construction, the 6AN Female to 6AN Female 180Deg Swivel Coupler features full 360-degree rotational capability on its ball-and-socket design, allowing you to dial in hose orientation after installation without breaking the seal. The 180-degree configuration means the inlet and outlet ports sit opposite each other, maximizing space efficiency in cramped engine compartments where forward-facing lines won't fit. Redhorse Performance's precision machining ensures zero leak paths—critical for fuel systems operating under pressure or oil circulation under high-flow conditions. The swivel action absorbs vibration and thermal expansion without stressing adjacent hard lines, extending the service life of your entire plumbing network.

This coupler excels in high-performance engine swaps, turbo installations, custom cooling loops, and fuel system builds where component density leaves zero tolerance for conventional adapters. Mechanics working on LS conversions, carburetor-to-EFI retrofits, and forced-induction setups rely on Redhorse swivel couplers to avoid costly rework and maintain system integrity under continuous operation. Compatible with any -6AN hose or fitting—whether braided stainless steel, PTFE core, or rubber—the coupler works seamlessly in both fuel and non-flammable fluid systems rated for -6AN pressure specifications. Compact at 2.8 x 3.85 inches, it fits behind shock towers and intake manifolds where space is at a premium.