4 Ply Silicone Sleeve 4. 5in I.D. x 3in long

The 4 Ply Silicone Sleeve 4.5in I.D. x 3in long from VIBRANT PERFORMANCE is a premium tubing coupler engineered for high-performance fluid transfer applications in automotive, powersports, and industrial systems. Designed as a straight connector, this silicone sleeve couples hoses or tubes with a 4.5-inch inner diameter, making it ideal for builders and technicians working with custom cooling, fuel, intake, and exhaust systems that demand reliable, flexible connections.

Constructed from durable 4-ply reinforced silicone, this sleeve delivers superior flexibility and temperature resistance compared to single-ply alternatives, allowing it to accommodate vibration and thermal cycling without cracking or degrading. The 3-inch length provides adequate overlap for secure hose-to-hose or tube-to-fitting connections, while the straight design eliminates bends that could restrict flow or create turbulence. Black silicone construction resists UV exposure, ozone, and coolant degradation, extending service life in underhood environments and ensuring consistent performance across demanding temperature ranges.

This coupler is ideal for automotive enthusiasts, engine builders, and technicians fabricating custom cooling systems, intake manifold upgrades, or modified fuel systems where off-the-shelf hoses don't fit. It integrates seamlessly with VIBRANT PERFORMANCE's complete line of silicone tubing and couplers, and works with any 4.5-inch nominal inner diameter hose or rigid tubing. Installation requires no special tools—simply slide the sleeve over both hose ends and secure with hose clamps for a leak-free, professional appearance.