#3 PTFE 12in Hose Clear Cover 3an Female St

The #3 PTFE 12in Hose Clear Cover 3AN Female Straight is a precision fluid transfer assembly engineered for high-performance automotive fuel and coolant systems. Designed for engine builders, tuners, and mechanics working on custom fuel injection setups, supercharged cooling loops, and race car builds, this hose delivers reliability in demanding underhood environments. The 12-inch length and female straight fitting configuration make it an ideal solution for connecting fuel rails, intercooler discharge lines, or pressurized cooling circuits where space is limited and clean aesthetics matter.

FRAGOLA's 3AN hose construction features PTFE (polytetrafluoroethylene) inner tubing, which resists corrosion from fuel additives, coolant chemistry, and aggressive solvents while maintaining structural integrity under pressure cycling. The clear cover allows you to visually inspect fluid condition and detect leaks or contamination without breaking the connection—a critical advantage in competition tuning and dyno work. The straight female end accepts standard 3AN male fittings with precision-engineered sealing surfaces, eliminating guesswork during installation and reducing leak risk at critical junctions where vibration and thermal cycling would compromise lesser hoses.

Professional engine builders and fuel system specialists rely on this assembly for LS swap fuel rails, turbocharged intercooler plumbing, and precision coolant routing in custom water-cooling installations. The lightweight design (0.126 lbs) contributes negligible weight while the compact 12-inch form factor fits tight engine bays where routing flexibility is essential. Installation is straightforward: ensure fittings are clean, apply thread sealant to male connections only, and torque to manufacturer specifications—typically 12–15 ft-lbs for 3AN fittings to avoid over-tightening the female port.