Radiator Expansion Bottles

HyperParts stock a wide range of high quality radiator expansion parts for various vehicles and models.

A radiator expansion bottle, tank or reservoir is a clear plastic container located above the radiator.

It’s connected to the radiator by an overflow pipe. It collects the spill-over of coolant from the radiator and recirculates it around the engine.

It allows for the expansion of the heated coolant when the engine is on. It stores the excess fluid when the vehicle is stationary.

All components in the vehicle’s cooling system are subject to high temperatures.

Over time, the radiator expansion bottle is prone to developing cracks and leaks. This can lead to serious issues with the engine that may warrant expensive repairs.

Obvious signs of a cracked or faulty radiator expansion bottle include consistently low levels of coolant in the reservoir, an overheating engine and leaking coolant.

Leaks are identified by dry residue on the side of the bottle, and fluid pooling up around the bottle or beneath the car.

Installing a replacement radiator expansion bottle is a job that can be tackled at home. The engine must be cool.

These two resources show you how to replace a radiator expansion bottle:

At HyperParts, we rely on strong supply chain relationships, forged over many decades, to offer the best aftermarket parts and spares – at affordable prices.

We offer radiator expansion bottles that are strong, durable and comprehensively tested, from well-known and trusted international brands, FEBI, Thermocool and Original Birth.

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