5/16in (8mm) ID x 20 ft long Silicone Heater Hos

The 5/16in (8mm) ID x 20 ft long Silicone Heater Hose from VIBRANT PERFORMANCE is engineered for high-temperature coolant and heating fluid management in performance and modified engine builds. Whether you're upgrading a custom cooling system, installing an auxiliary heater core, or routing heated coolant through an aftermarket component, this silicone hose delivers the reliability and flexibility that serious mechanics and enthusiasts demand. Silicone construction is essential when stock rubber fails under elevated temperatures or when your modification requires routing fluid through tight engine bay spaces.

Built from premium silicone material, this hose resists thermal degradation, oil exposure, and coolant chemistry that would degrade conventional rubber compounds. The 5/16 inch (8mm) inner diameter fits OEM and aftermarket quick-disconnect fittings, barbed connectors, and compression clamps commonly found in engine modification kits. At 20 feet in length, you have sufficient material for complex routing scenarios—custom heater circuits, turbo coolant lines, or remote thermostat housings—while the flexibility of silicone eliminates the need for multiple elbows and fittings that add cost and potential leak points.

Technicians working on turbocharged, supercharged, or heavily modified engines will find this hose indispensable for coolant bypass circuits, auxiliary heating systems, and custom cooling loops. The hose is compatible with standard barbed fittings (compression clamps recommended) and works with both ethylene glycol coolant and water-methanol mixtures. Installation is straightforward: measure your routing path, cut the hose to length with a sharp utility knife, slide clamps onto both ends, and secure to your fittings—no specialized tools required.