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Overflow & Expansion Tanks

Coolant expansion and recovery tank caps, plus overflow bottles supplied with a cap, for cooling systems that use a separate coolant reservoir.Coolant expansion tank caps and overflow bottles for cooling systems with a separate reservoir.
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Choosing a coolant expansion tank part

Work out whether you need a replacement cap or a complete overflow bottle, then match the part to your vehicle's cooling system.

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Cap or complete bottle

Some items here are caps only, while others are a complete bottle with its cap. Check which one the listing describes so you replace the right piece.

Cap and neck match

A cap needs to suit the reservoir it seals. Compare the thread or lock style, the shape and any pressure markings against your existing cap or manufacturer information.

Application details

Bottles are often engine and body specific, so confirm the make, engine and year range, and compare the hose connections and mounting points where the listing shows them.

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