Aluminum Tee 1/8 NPT x 1/8 NPT x -4

The Aluminum Tee 1/8 NPT x 1/8 NPT x -4 by QUICKCAR RACING PRODUCTS is a precision fluid distribution adapter engineered for high-performance fuel, coolant, and pneumatic system plumbing. This fitting serves mechanics and engine builders who demand reliable, leak-free connections when consolidating multiple fluid lines into a single junction. Whether you're building a custom fuel system, routing secondary cooling lines, or integrating boost control lines in a turbocharged engine bay, this adapter bridges three different port sizes with automotive-grade aluminum construction.

Constructed from lightweight aluminum, the Aluminum Tee 1/8 NPT x 1/8 NPT x -4 features two 1/8-inch NPT female ports and one -4 AN male port, allowing seamless integration between standard pipe thread and AN-sized hard lines or hose assemblies. The NPT (National Pipe Thread) standard ensures a tapered, self-sealing connection that tightens progressively as you thread fittings home—critical for preventing weeps in pressurized systems. The -4 AN designation on the third port accommodates standard -4 hose or hardline fittings common in modern performance fuel systems, turbo boost lines, and custom cooling circuits. Aluminum's inherent corrosion resistance and minimal weight make it ideal for engine compartments where vibration and thermal cycling demand material durability without unnecessary mass.

Street rod builders, race car fabricators, and turbo system installers rely on this adapter when designing compact, efficient plumbing layouts that don't compromise on reliability. Installation is straightforward: apply appropriate thread sealant (PTFE tape or liquid threadlocker) to NPT ports, thread into manifolds or distribution blocks, and secure AN-ported lines using standard -4 hose clamps or flange fittings. Its compact footprint (3.5 x 0.6 x 4.55 inches) fits tight engine bays where space is at a premium, and the minimal weight penalty (0.05 lbs) is negligible in systems where flow capacity and zero-leak integrity matter most. Compatible with fuel, coolant, and pneumatic media at standard automotive pressures.