4AN 45Deg Female Alum Hose End Red Blue

The 4AN 45Deg Female Alum Hose End Red Blue by REDHORSE PERFORMANCE is a precision-engineered fitting designed for modern fuel, coolant, and fluid transfer systems in custom and modified vehicles. This 45-degree angle adapter serves as a critical junction point in high-performance plumbing applications where space constraints or angled port configurations demand directional versatility. Whether you're fabricating a fuel system for a turbocharged engine, routing coolant lines through a tight engine bay, or building a custom hydraulic circuit, this female aluminum hose end provides reliable, leak-free connections with automotive-grade durability.

Constructed from lightweight aluminum alloy, the 4AN fitting reduces overall system weight while maintaining structural integrity under pressure cycling. The 45-degree angled design eliminates sharp bends in hose runs, reducing stress concentrations and improving fluid dynamics—a critical consideration in fuel and coolant systems where turbulence and pressure spikes can compromise performance or longevity. The female configuration accepts standard 4AN male hose ends, making it compatible with a wide range of aftermarket hose assemblies. Color-coded in red and blue for easy circuit identification, this fitting simplifies troubleshooting and system assembly during complex engine modifications.

This adapter is essential for mechanics and fabricators building turbocharged, supercharged, or high-capacity fuel systems where OEM hard-line routing is insufficient. It excels in custom radiator bypass circuits, remote oil cooler installations, and boost control plumbing where 90-degree hard bends would create dead zones or excessive hose flexing. Installation requires only a compatible 4AN male hose end and basic hand tools—no specialized adapters needed. The compact 2.8 x 1.55 x 3.6-inch form factor fits tight engine compartments common in street rods, race cars, and modern performance builds where every millimeter of space matters.