4AN Swivel Hose Ends Black 90

The 4AN Swivel Hose Ends Black 90 from REDHORSE PERFORMANCE is an essential fitting for any high-performance fuel, coolant, or hydraulic system upgrade. Whether you're building a custom engine bay, installing a fuel injection conversion, or retrofitting a turbo setup, these 90-degree swivel adapters eliminate the frustration of rigid hose runs and tight routing constraints. Mechanics and enthusiasts rely on quality swivel fittings to achieve clean, functional plumbing without kinks, stress points, or leaks that compromise reliability.

Built from precision-engineered aluminum with a durable black anodized finish, the 4AN swivel hose end features a 90-degree angle that allows hoses to bend naturally around engine components and frame rails. The swivel design—which rotates independently of the hose attachment—prevents hose twisting and the micro-tears that accumulate under vibration and thermal cycling. The 4AN port size (1/4-inch nominal ID) handles moderate flow rates typical of fuel systems, coolant loops, and brake line applications without pressure loss, while the carefully machined threads ensure leak-free, hand-tight assembly when paired with compatible AN fittings and hoses.

This fitting is ideal for street rods, race cars, LS engine swaps, and any modification where OEM hose routing no longer works. Installers appreciate the compact 2.75-inch overall length and minimal 0.95-inch width, which fit into tight spaces around fuel rails, heater cores, and transmission coolers. Compatible with standard AN hose crimpers and 4AN hose barbs, these swivel ends integrate seamlessly into existing plumbing systems and are a staple in any serious fabricator's toolkit. The black anodized finish resists corrosion and matches modern engine bay aesthetics while maintaining full functionality in street and track environments.