Swivel Coupling Fitting 3an Female Straight

The Swivel Coupling Fitting 3AN Female Straight from EARLS is a precision hydraulic adapter designed for high-performance fuel, oil, and coolant line applications in race cars, hot rods, and heavily modified street vehicles. This fitting serves as a critical junction point in custom fuel systems and cooling circuits where vibration isolation and ease of connection are essential. Mechanics and fabricators rely on swivel couplings to accommodate misalignment and reduce stress on braided hose assemblies during engine bay installation and removal.

Constructed from aluminum with a black anodized finish, this 3AN female-to-female straight adapter delivers durability and corrosion resistance in demanding underhood environments. The swivel design allows the fitting to rotate freely, preventing hose kinking and twisting during assembly—a feature that saves installation time and extends hose life by eliminating torsional stress. At just 0.02 lbs and measuring 3 inches in length, the compact form factor integrates seamlessly into tight engine bay layouts without sacrificing strength or flow capacity. EARLS' reputation for precision engineering ensures consistent thread specifications and leak-free performance under sustained pressure and temperature cycling.

This fitting is ideal for builders upgrading fuel systems on LS swaps, turbo conversions, and custom cooling loops where AN (Air & Nitrogen) sized components dominate the plumbing architecture. The 3AN female straight configuration works seamlessly with standard braided hose fittings and other EARLS adapters, making it a versatile choice for point-to-point line routing. Installation requires no special tools—hand-tightening with a backup wrench ensures proper seating without over-torquing aluminum threads. Whether you're building a race engine or restoring a classic with modern fuel injection, this swivel coupling fitting delivers the reliability and adjustability professional mechanics demand.