#6 x 9/16-18 90 Deg Swivel Adapter Black

The #6 x 9/16-18 90 Deg Swivel Adapter Black by FRAGOLA is a precision hydraulic or fuel line fitting engineered for high-performance automotive systems where directional flexibility is critical. Built for mechanics and fabricators working on fuel injection systems, brake lines, transmission coolers, and custom fuel delivery setups, this swivel adapter eliminates the need for multiple offset fittings or complex routing. The 90-degree configuration with a full 360-degree swivel neck allows you to achieve tight angles and awkward spaces without kinking, leaking, or applying excessive torque to connection points—a common problem in engine bay modifications where space is at a premium.

This adapter features a #6 SAE port with a 9/16-18 thread pitch, a industry-standard sizing found across fuel system components, hydraulic brake applications, and transmission line work. The swivel joint permits up to 360 degrees of rotation, meaning you can lock the line at any angle without compromising the seal—a design that reduces installation time and prevents the common mistake of over-torquing immobile fittings. FRAGOLA's black zinc-plated finish resists corrosion in underhood environments, protecting against moisture and heat cycling that can degrade unfinished aluminum or steel. The compact 1.5 x 1 x 2-inch footprint and lightweight 0.06-pound construction make it ideal for tight engine compartments and weight-conscious builds.

Professional builders and serious DIY enthusiasts benefit most from this adapter when custom-routing fuel lines, integrating aftermarket fuel pressure regulators, or plumbing auxiliary cooler circuits. It's particularly valuable in turbocharged, supercharged, or fuel-injected engine conversions where OEM line paths don't exist and space constraints force non-standard angles. Compatible with any system using SAE #6 male and female ports—including fuel-injection rails, carbureted fuel blocks, and hydraulic brake reservoirs—this swivel fitting eliminates leaks caused by line stress and allows clean, professional routing in confined areas. Installation is straightforward: thread the fitting by hand until snug, then use a wrench to hold the port body while tightening the nut—never turning the swivel head itself, which preserves the seal integrity.