4AN Tee with Female Swivel on Run Black

The 4AN Tee with Female Swivel on Run Black from REDHORSE PERFORMANCE is an essential hydraulic fitting for any serious fuel system, coolant line, or brake fluid application in modified vehicles and high-performance engine builds. This tee connector allows you to split flow in three directions while maintaining system integrity under pressure, making it ideal for custom plumbing where a single feed needs to distribute to multiple components. Whether you're building a turbocharged setup, upgrading your cooling circuit, or running fuel lines to aftermarket injectors, a quality 4AN tee is non-negotiable for safe, reliable operation.

This fitting features a female swivel design on the run leg, which provides thread protection and allows for easy connection and disconnection of hoses without kinking or twisting the main feed line—a critical detail when you're working in tight engine bay spaces. The black anodized aluminum construction resists corrosion and maintains a professional appearance while delivering robust durability in demanding conditions. REDHORSE PERFORMANCE fittings are engineered to -40AN SAE standards, ensuring consistent pressure ratings and compatibility across your entire custom plumbing network. The compact 2.8 x 1.15 x 3.8 inch profile and minimal 0.065 lb weight mean zero impact on your vehicle's weight distribution or layout constraints.

Mechanics and tuners routinely spec REDHORSE fittings for street cars, drag builds, and road course platforms because the swivel design reduces hose fatigue and vibration-induced failures under sustained boost or high flow conditions. The female swivel on run is particularly valuable when you need to mate AN hose on two legs while connecting a hard line or gauge sender to the third port. Installation requires no special tools beyond standard wrenches, and the design ensures leak-free operation when properly seated. For anyone running 4AN hose diameter plumbing—fuel systems, oil cooler circuits, intercooler feeds, or transmission cooling—this tee delivers the reliability and ease of installation that separates a professional build from a backyard experiment.