Is your coolant overflow tank failing? Get in touch with Natrad for a replacement quote
A damaged engine expansion tank needs to be replaced immediately to ensure your cooling system functions correctly. If you notice leaks, persistent low coolant levels, or an overheating engine, visit your nearest Natrad for expert advice.
The expansion tank in a cooling system captures the excess volume of coolant created when the radiator temperature rises, and allows it to return when the temperature drops. A failing expansion tank can lead to severe overheating and possible mechanical failure. Radiator overflow tanks, also known as overflow expansion tanks or coolant reservoir tanks, can become discoloured, brittle, contaminated with sludge, or even crack due to age and thermal cycling.
A qualified technician can correctly install a coolant expansion tank
Australia's largest network of vehicle cooling specialist workshops
The largest range of OE and aftermarket cooling system parts in Australia
National warranty supported by our network of radiator workshops
COB003
Suitable for: Ford Falcon BA/BF, Territory SX/SY/SZ
COB014
Suitable for: Volkswagen Golf, Beetle, Audi A3, and Skoda Octavia
COB021
Suitable for: Supercharged Engines for Holden Commodore VT-VZ, Statesman WH/WK/WL, and Monaro V2
COB037
Suitable for: Nissan Patrol GU and Ford Maverick Y60
COB038
Suitable for: Hyundai Elantra XD and Tiburon
Modern vehicle cooling systems are pressurised to ensure efficient thermal management. As the engine coolant heats up, it expands, creating pressure inside the radiator.
The coolant expansion tank holds excess coolant displaced as the pressure rises, returning it to the radiator when the temperature and pressure drops. The coolant expansion tanks supplied by Natrad help ensure that the pressure within the cooling system is controlled and that engine coolant is not lost during expansion.
Natrad stocks a wide range of cooling parts, including coolant caps, hoses, water pumps, suitable for replacements or upgrades.
Ask your local Natrad technician about a free cooling system inspection to see what parts may need replacing.
Get more value when you nip into Natrad. We’re offering a Free Cooling System Check as thanks for choosing us. T&Cs apply.
Got any questions about our heating and cooling services?
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