45 Degree Transition Hose 3in I.D. to 3.5in

The 45 Degree Transition Hose 3in I.D. to 3.5in by Vibrant Performance is engineered for builders and mechanics who demand precision in custom intake and cooling system plumbing. This transition hose fills a critical gap in modular engine builds where turbocharger outlets, intercooler piping, or radiator hose routing requires a smooth diameter step-up without introducing turbulent flow restrictions. Whether you're fabricating a twin-turbo kit, upgrading boost piping, or designing a custom cooling loop, this 45-degree elbow hose eliminates the need for multiple adapters and bunched connections that compromise both aesthetics and system efficiency.

Manufactured by Vibrant Performance—a trusted name in high-flow intake and exhaust systems—this transition hose features a reinforced construction designed to withstand boost pressure, coolant flow, and thermal cycling in demanding applications. The 45-degree geometry allows for flexible routing in tight engine bays while maintaining laminar flow, crucial for both intercooler efficiency and cooling system pressure stability. The 3-inch inner diameter inlet step up to 3.5 inches creates a gradual transition that minimizes flow separation, reducing pressure loss compared to abrupt step fittings. This hose is compatible with standard automotive hose clamps and integrates seamlessly into custom hard-line or soft-line systems using barbed or flange adapters.

This transition hose is ideal for serious street and track builders working on naturally aspirated, supercharged, or turbocharged platforms requiring custom plumbing solutions. Professional fabricators and DIY enthusiasts alike benefit from having this diameter adapter on hand, eliminating costly delays when prototype piping layouts require mid-build adjustments. The compact 12.75-inch length provides optimal bend radius without excessive bulk, making it suitable for tight engine compartments in both classic restorations and modern performance builds. Installation is straightforward—simply secure the hose ends with appropriate clamps and verify no sharp bends exceed the hose's natural bend radius to ensure longevity under pressure and heat cycling.