High Quality Engine Coolant Expansion Tank Reservoir 31200322 for Cooling System Coolant Overflow Bottle Replacement Parts

Genuine Coolant Expansion Tank – OEM Grade 31200322

Fixes Coolant Leaks and Overheating, Without the Dealer Price Tag

Your customer's S80, V70, XC60, or XC70 is losing coolant, showing a low coolant warning, or overheating because the expansion tank has cracked or its level sensor has failed. They need a direct replacement that restores proper cooling system pressure and accurate level monitoring — not a cheap tank that leaks from day one.

Direct OE Replacement
Manufactured to replace part number 31200322 (also cross-references 30645813 and 30792152), this coolant expansion tank, also known as an overflow bottle or header tank, stores excess coolant as it expands and contracts with engine temperature. Same plastic construction, same integrated coolant level sensor, same mounting points. No adapters, no modifications required.

Restores Critical Cooling System Function
The expansion tank maintains proper system pressure and provides a clear point to check and add coolant. A cracked tank or failed sensor causes coolant loss, air pockets, and false low-coolant warnings. This replacement restores a sealed, reliable cooling system.

Built to Outlast the Original
Available in premium aftermarket alternatives from NRF (50500021), Metzger (2140407), and Luzar at competitive wholesale pricing. Each unit is inspected for correct sensor function and leak-free sealing.

Broad Fitment
Fits S80 (2007–), V70 (2008–), XC70 (2008–), and XC60 (–2017) across 2.4D and D5 diesel variants including D5244T4 and D5244T5 engines. Confirm model year and engine code via VIN before ordering.

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