Radiator Overflow Tank Repair & Replacement Hamilton | Grimmer Motors Hamilton
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Radiator Overflow Tank Repair & Replacement Hamilton

What does the radiator overflow tank do?

The radiator overflow tank is an important component that prevents the overflow of engine coolant. It is connected to your radiator and houses excess coolant until it has reached a low temperature again.

Coolant keeps your engine at a healthy temperature and travels between the radiator and the engine. When the coolant is heated by the engine, it expands, causing it to take up more space. The overflow tank collects the expanded coolant, preventing overflow out of the engine cooling / radiator system. Once the coolant is at a suitable temperature (cooled down), it is let back into the radiator.

More info on how the overflow tank works >


Symptoms of a damaged radiator overflow tank:

Coolant leaks – You may notice that coolant is appearing under your vehicle. This can be caused by a crack in your overflow tank, radiator, or hoses. Coolant leaks should be repaired immediately before they cause damage to your engine.

Coolant leak repair in Hamilton >

Overheating – Your car’s temperature gauge may be higher than normal. This can be caused by overflow tank damage. Overheating can damage your engine very quickly, resulting in an expensive repair.

Physical damage to tank – Examining the overflow tank may reveal an obvious crack or hole. These cracks or holes will need to be repaired or the overflow tank replaced immediately.


How important is an overflow tank repair?

It is important that all parts of your cooling system function as they should. This is because your cooling system plays the vital role of keeping your engine at a suitable temperature. When an engine overheats, parts will bend, warp, seize and stop working, often meaning that the engine will need to be replaced. 

If you notice a problem with your overflow tank, we recommend that you have the tank repaired or replaced as soon as possible to avoid serious engine damage. 

Radiator Overflow Tank Repair & Replacement in Hamilton

At Grimmer Motors, we can replace your vehicle’s overflow tank. Our skilled mechanics are quick to diagnose and fix errors in your car’s cooling system. This allows for your car to be on the road again sooner rather than later. 

Whether its the overflow tank, the radiator, thermostat or water pump, we can provide high-quality cooling system repairs in Hamilton. To get your car fixed, contact us today!

Please Note – we don’t generally stock or supply just “parts only” for this service. We are a general automotive repair workshop. If you are able to bring your vehicle to us, we can diagnose the problem, find and fit the necessary parts, or organise the appropriate service for you.



Phone: 07 855 2037

Address: 998 Heaphy Terrace, Fairfield, Hamilton

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