45 Degree High Flow Hose End Fitting -4

The 45 Degree High Flow Hose End Fitting -4 from Vibrant Performance is a precision aluminum hose connector engineered for serious engine builders, fuel system integrators, and custom automotive enthusiasts who demand reliability under pressure. This -4 AN fitting delivers the directional flow control needed in tight engine compartments where space constraints demand angled connections. Whether you're fabricating a fuel delivery system, coolant circuit, or brake fluid line on a high-performance build, this 45-degree hose end fitting accommodates the real-world geometry of modern engine bay layouts.

Constructed from black anodized aluminum, this fitting accepts 4 AN PTFE (polytetrafluoroethylene) hose on one end and mates to a 4 AN female port on the other, creating a leak-free sealed connection rated for fuel, coolant, and hydraulic fluid applications. The 45-degree angle eliminates sharp bends that can kink hose lines and restrict flow, while the high-flow design minimizes pressure drop across the connection point—critical for fuel systems requiring consistent delivery or cooling circuits under sustained load. PTFE-compatible construction ensures compatibility with ethanol-blended fuels and modern fuel additives without degradation.

This fitting is ideal for builders working on turbocharged platforms, engine swaps, or systems requiring custom plumbing that production setups cannot accommodate. Mechanics and fabricators routinely specify -4 AN fittings for their compact footprint and reliable sealing—the female connection end prevents accidental disconnection under vibration. Installation requires proper hose crimping equipment and AN hose compatible with the 45-degree configuration; ensure your hose supplier confirms compatibility with this specific fitting geometry for optimal performance and longevity.