4AN 120 Degree AN/Hose End Push Lock Black

The 4AN 120 Degree AN/Hose End Push Lock Black fitting from REDHORSE PERFORMANCE is a critical component for any serious fuel system, coolant line, or hydraulic brake setup on modified vehicles. Whether you're building a fuel-injected engine swap, upgrading to a high-flow cooling system, or installing a modern brake conversion, this push-lock hose end delivers the leak-free, vibration-resistant connections that competition and street performance builds demand. The 120-degree angle design allows you to route hoses around engine bays and tight component clusters without kinks or pressure loss, making it indispensable for custom intake manifolds, fuel rails, and remote-mounted filters.

REDHORSE's push-lock technology eliminates the need for separate hose barbs and clamps, instead using a one-piece design with an internal retention ring that grips standard AN hose securely without cutting or degrading the inner tube. The black anodized aluminum construction resists corrosion in engine bays exposed to heat cycles, salt spray, and fluid contact, while the 4AN size (1/4-inch nominal flow rating) handles fuel supply, return lines, and moderate-flow cooling circuits. The 120-degree geometry is machined to precise tolerances, ensuring proper hose seating and allowing for quick assembly—a critical advantage when working in confined spaces during engine builds or component installation where access angles are compromised.

Mechanics and enthusiasts building EFI swaps, turbo fuel systems, and custom cooling loops prefer push-lock ends for their reliability and speed compared to threaded or barbed alternatives. This fitting works with any hose rated for AN4 size and standard SAE J30R7 or J30R8 fuel-grade hose construction. Installation is straightforward: push the hose onto the barbed inlet until fully seated, and the internal lock ring locks in place. For high-vibration applications or systems running elevated pressure, verify your hose specification matches the system's working pressure rating and always use AN hose that meets DOT or SAE standards for automotive fuel and coolant duty.