3in ID to 3-1/2in ID Silicone Transition Hose

The 3in ID to 3-1/2in ID Silicone Transition Hose is a precision reducer coupler designed for fluid and vacuum systems where inner diameter step-downs are essential. This hose effectively connects two different hose sizes—3 inches to 3.5 inches inner diameter—making it ideal for custom cooling, heating, and pressurized applications in automotive, industrial, and marine environments.

Constructed from high-grade silicone, this transition hose offers superior flexibility, temperature resistance, and durability compared to rigid plastic or metal alternatives. The 3-inch length provides a compact transition zone that minimizes turbulence and pressure loss while maintaining structural integrity under demanding conditions. Vibrant Performance's silicone formulation resists extreme temperatures, ozone, and UV degradation, ensuring reliable long-term performance.

Technicians and enthusiasts building custom cooling loops, intercooler systems, and vacuum lines will find this coupler essential for achieving professional-grade results without compromising flow characteristics. The straight design allows for direct inline installation, making it a versatile choice for various applications.