Vibrant Silicone Reducer Coupler 4.00 in. ID x 3.00 in. ID, 4.50 in. Length - Black

Vibrant Performance Aramid Reinforced Silicone Transition Hose Couplers feature High Temperature Resistant Aramid Reinforcement Fabric between each layer of silicone which allows for an impressive Operating Temperature Range of -75 Degrees F to 392 Degrees F (-60 Degrees C to 200 Degrees C). Suitable for Water, Coolant and Air service only. Reducer Coupler; 3 in. Inlet ID; 4 in. Outlet ID; 4.5 in. Length; 18 PSI Maximum Operating Pressure; 0.2 in. Wall Thickness; Black;

The Vibrant Silicone Reducer Coupler part number 19738 is designed for high-performance automotive applications requiring durable and reliable hose connections. Crafted from high-quality silicone with aramid reinforcement fabric, this coupler offers exceptional resistance to high temperatures, making it suitable for water, coolant, and air systems operating within a temperature range of -75°F to 392°F. Its robust construction ensures it can withstand maximum operating pressures of up to 18 PSI, providing a secure and leak-free connection under demanding conditions.
Built with a reducer design, this coupler features a 4-inch inner diameter inlet and a 3-inch outlet, making it ideal for transitioning between different hose sizes in your vehicle’s cooling or intake system. The 4.5-inch overall length allows for flexible installation in tight engine bays, while the black silicone finish provides a sleek, professional appearance. The wall thickness of 0.2 inches contributes to its strength and durability, ensuring long-term performance without deformation or failure.
This coupler is suitable for use in automotive water, coolant, and air lines where high temperature resistance and reliability are critical. Its construction includes a high-temperature resistant silicone layer combined with aramid reinforcement, which prevents cracking and breakdown under extreme heat and pressure conditions. Designed for ease of installation, it ensures a tight fit and effective sealing, reducing the risk of leaks and system failures. Ideal for performance enthusiasts and professional mechanics alike, this coupling combines quality materials with precision engineering to meet the demands of modern automotive systems.

Features:

• High Temperature Resistant Silicone: able to withstand temperatures from -75°F to 392°F

• Aramid Reinforced Fabric: provides enhanced durability and strength

• Reducer Design: connects 4-inch inlet to 3-inch outlet hoses

• Overall Length: 4.5 inches for versatile installation

• Maximum Operating Pressure: 18 PSI for secure connections

• Black Silicone Finish: offers a sleek look and resistance to heat and environmental factors

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: N
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1