Hump Hose Coupler 4in ID x 6in Long

The Hump Hose Coupler 4in ID x 6in Long from Vibrant Performance is an essential coupling solution for custom cooling, intercooler, and intake manifold plumbing on high-performance engine builds. Whether you're routing silicone hose through tight engine bays or fabricating a custom coolant loop, this coupler provides a reliable junction point that handles both vacuum and positive pressure applications. Professional mechanics and DIY fabricators rely on quality couplers to eliminate leaks and maintain system integrity under demanding conditions.

Constructed with a 4-inch inner diameter and 6-inch length, this hump coupler accommodates 4-inch ID silicone hose or tubing while the expanded hump profile maximizes contact surface area for secure hose clamping. The flexible design absorbs vibration and thermal expansion common in modified engines, reducing strain on connection points and preventing premature hose failure. Vibrant Performance couplers are engineered from durable materials that resist coolant degradation, ozone cracking, and high-temperature cycling, making them suitable for both street and track applications.

This coupler is ideal for turbo intercooler setups, radiator bypass loops, heater control modifications, and custom intake charge cooling systems where factory hard-pipe routing won't work. It pairs seamlessly with 4-inch silicone hose secured by stainless steel hose clamps, and the six-inch length provides enough material overlap to ensure leak-free seals on both inlet and outlet sides. Installation is straightforward—slide hose onto each end, position clamps over the hump sections, and torque evenly for even pressure distribution across the connection.