Welcome to the Expansion Tank shop at PartsGateway
The vehicles expansion tank acts as an overflow system catching the coolant from the radiator that has been released due to increased pressure. Once the temperature drops, most of coolant housed in the expansion tank returns nautrally to the cooling system. Without the expansion tank, the released coolant would simply spill out under the vehicle.
If you are experiencing water loss in your cooling system, the signs may point to a leaking expansion tank. Before you rush out to replace the expansion tank, it is worth checking the radiator cap, water pump and radiator for blockages or cracks.
If you need to replace your faulty expansion tank, this can be easily done at relatively low cost with moderate mechanical knowledge.
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