#4 Tee w/ #4 Female Bottom Adapter

The #4 Tee with #4 Female Bottom Adapter by Aeroquip is a critical component for custom fuel, coolant, and hydraulic line routing in high-performance engine builds and modified vehicle systems. This tee fitting allows mechanics and fabricators to split a single incoming line into two outgoing branches while maintaining a sealed connection on the bottom port, making it ideal for dual-circuit cooling systems, auxiliary fuel distribution, and brake line configurations in race cars, hot rods, and heavily modified street vehicles.

Aeroquip's #4 fitting uses proven SAE 04 size standardization—a universal automotive hydraulic standard that ensures compatibility across OEM and aftermarket component ecosystems. The female bottom adapter port is pre-installed and sealed, eliminating the need for a cap or additional adapter while simplifying assembly and reducing potential leak points in your custom plumbing layout. Aeroquip's precision engineering and quality control mean these fittings withstand sustained pressure cycles, temperature fluctuations, and vibration inherent to modified engine compartments without weeping or failure.

Fabricators building custom cooling loops, fuel systems, or transmission cooler lines will find this tee fitting indispensable for multi-circuit applications where a single feed source must branch to multiple destinations. The compact 2.3 x 1.1 x 3.7 inch profile and lightweight 0.05 lbs design make it easy to route and mount in confined engine bays without adding significant weight or bulk. Verify your hose and adapter port sizes match #4 SAE specifications before ordering to ensure proper fitment and seal integrity in your system.