Hose Fitting #4 90 Deg Pro-Flow

The Fragola Hose Fitting #4 90 Degree Pro-Flow is a precision aluminum adapter designed for high-flow fuel and coolant line routing in custom engine builds and performance modifications. This fitting is essential for fabricators, performance shops, and serious engine builders who prioritize system integrity and flow characteristics.

Constructed from lightweight aluminum, this #4 fitting (equivalent to 1/4-inch hose ID) features Fragola's Pro-Flow design, which incorporates smooth internal passages to minimize turbulence and maintain consistent pressure delivery. The 90-degree configuration allows for tight bends around engine components without kinking hoses or requiring multiple adapters that could introduce pressure drops.

This fitting is optimized for fuel injection systems, nitrous lines, and cooling circuits, making it a critical component in performance applications where velocity consistency impacts overall system performance. Its precision-machined seat ensures leak-free connections when paired with quality hose and proper installation techniques.