45 Degree Transition Hose 3in I.D. to 4in

The 45 Degree Transition Hose 3in I.D. to 4in from Vibrant Performance is designed for automotive builders who require efficient air intake and exhaust routing in custom engine setups. This transition hose is particularly useful for those upgrading intake manifolds, turbo charge pipes, or custom radiator configurations.

Featuring a stepped mandrel-bent construction, this hose minimizes turbulence while maintaining structural integrity under pressure and thermal cycling. The design allows for a smooth transition from a 3-inch inner diameter inlet to a 4-inch inner diameter outlet, ensuring optimal airflow without creating restrictive flow restrictions.

Ideal for professional mechanics and automotive enthusiasts, this hose is engineered to withstand sustained boost pressure and high under-hood temperatures. Its 45-degree angle geometry is essential for fitting into tight engine bays where straight transitions may not be feasible, making it a valuable component in performance cooling applications.