Coolant Overflow Reserve Solution

Why You Need This Part

This critical component stores excess coolant from your vehicle's radiator, ensuring optimal engine temperature and preventing overheating. When the engine gets hot, coolant expands and flows into this tank. As the engine cools, the fluid returns to the radiator, keeping your system balanced.

How It Works

The overflow reserve system operates with pressure changes in your cooling system. When pressure builds, the coolant moves safely into the tank. As pressure drops, a vacuum pulls the coolant back. This maintains ideal levels and prevents air from entering your engine's cooling circuit.

What Happens If It's Broken

A cracked or leaky tank causes coolant loss, which can result in overheating, engine damage, or coolant warning lights. You may see coolant puddles under your car or notice the engine running hotter than usual. Ignoring this issue could lead to expensive repairs.

Compatibility

• Hiace
• Hiace/Regiusace