#4 x 1/8 MPT 90 Deg Swivel Adapter Black

The #4 x 1/8 MPT 90 Deg Swivel Adapter Black by FRAGOLA is an essential fitting for high-performance fuel, oil, and coolant line routing in custom engine builds and modified vehicle systems. Designed for mechanics and enthusiasts who demand precision hydraulic connections, this swivel adapter eliminates the frustration of rigid line angles that bind or stress under vibration and thermal expansion. Whether you're fabricating a fuel cell setup, custom cooling loop, or pressure-fed lubrication system, this adapter provides the flexibility needed to navigate tight engine bays without kinking vulnerable hoses or fittings.

FRAGOLA's 90-degree swivel design allows full rotational movement at the connection point, reducing stress concentration on both the adapter and attached hose under operating pressure and vibration cycles. The #4 size designation (compatible with -4 AN hose) and 1/8 inch male pipe thread (MPT) port configuration make this fitting ideal for integrating with standard hydraulic manifolds, pump inlets, or custom ported aluminum blocks. The black anodized aluminum finish resists corrosion from fuel, oil, and coolant exposure while maintaining a clean appearance in custom engine bays. This compact design measures 3.35 x 0.6 x 7.3 inches and weighs just 0.02 lbs, ensuring it won't add unnecessary bulk to already congested underhood spaces.

Street rodders, drag racers, and engine builders installing custom fuel injection, turbo cooling systems, or modified oiling setups rely on FRAGOLA swivel adapters to prevent hose strain failures during high-load operation. Installation requires only compatible -4 AN hose ends on one side and standard NPT-compatible porting on the manifold or component side, making integration straightforward for both OEM modifications and ground-up builds. Use this adapter wherever you need reliable angle correction without sacrificing durability or requiring expensive custom-bent hard lines.