Looking to replace plastic with something built to last? This seamless one-piece silicone Y-hose swaps out factory plastic fittings that crack and leak over time. Keep your vehicle from overheating with this extra-durable, multi-layer silicone hose, complete with a built-in one-way valve to ensure proper coolant flow. Protective heat sleeves guard against high engine bay temperatures, and include worm-gear clamps that provide a secure, reliable installation.