4AN 120 Degree PTFE Reusable Hose End Black

The 4AN 120 Degree PTFE Reusable Hose End Black from REDHORSE PERFORMANCE is a precision hydraulic fitting engineered for high-performance fuel, coolant, and fluid management systems in modified vehicles. This 4AN hose end is built for enthusiasts and professional mechanics who demand reliable, leak-free connections in turbocharged, supercharged, and custom engine builds where vibration and thermal cycling demand superior durability. Whether you're upgrading a fuel system on a street rod, installing a custom cooling loop, or fabricating a competition-grade hydraulic line, this reusable fitting delivers the redundancy and serviceability required for evolving builds.

Constructed with PTFE (polytetrafluoroethylene) sealing surfaces, the 4AN 120 Degree PTFE Reusable Hose End eliminates the need for disposable Teflon tape and ensures a dry, zero-leak interface across repeated assembly cycles. The 120-degree bend geometry positions lines efficiently in tight engine bays and frame rails, reducing hose routing complexity and preventing kinks that compromise flow. The black anodized aluminum body resists corrosion from coolant additives, fuel system peroxide, and salt-air exposure, while the reusable design allows you to swap hose cores without replacing the fitting—a significant cost advantage in fabrication work and tuning iterations.

This hose end pairs seamlessly with standard 4AN braided stainless steel hose and compatible adapters, making it ideal for fuel injection returnless systems, transmission cooler lines, and custom radiator plumbing on LS-swap vehicles, modern muscle cars, and classic hot rods. Mechanics value the reusable construction for prototype systems and R&D builds where frequent disconnection and reconnection are standard practice. Proper installation requires hand-tightening followed by wrench engagement on the body hex—over-torquing the swaged fitting can compromise the PTFE seal, so a careful approach ensures years of reliable service.