Hose Fitting #4 Straight PTFE Black

The FRAGOLA Hose Fitting #4 Straight PTFE Black (model 680104-BL) is a precision AN hose adapter engineered for high-performance hydraulic and fuel line applications. This straight fitting connects 4 AN hose to 4 AN female ports, providing a leak-free seal in demanding motorsport, racing, and off-road environments where pressure integrity is non-negotiable. The black anodized aluminum construction delivers corrosion resistance while maintaining lightweight durability across extended service intervals.

Constructed from aluminum with black anodized finish, this fitting resists oxidation and maintains structural integrity in salt air, fuel immersion, and vibration-prone mounting environments. The straight configuration eliminates angular stress on connected hose runs, reducing fatigue cracking and extension of service life in applications like custom fuel systems, turbo plumbing, transmission cooler lines, and brake system modifications. PTFE hose compatibility ensures the fitting performs across a wide temperature and pressure range without degradation, critical for real-world track and trail conditions.

This fitting addresses the needs of fabricators, engine builders, and performance enthusiasts who demand OEM-grade adapter quality without paying OEM prices. Whether plumbing a custom fuel system, upgrading brake lines, or integrating aftermarket cooling loops, the 4 AN straight fitting provides the standard compatibility and leak-tight performance required by SAE J518 Code 61 specifications. At 0.04 lbs, the compact footprint fits tight engine bays and confined spaces where weight and clearance matter.