BMW Coolant Expansion Tanks for BMW X5 M S63 4.4L

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On certain models, namely E36, E46, and E90, the factory BMW expansion tank is prone to either breaking at connection points or blowing apart altogether. If you're starting to feel like your expansion tank is on borrowed time, it's probably time to replace with either a direct OE replacement, or strengthen your cooling setup with an aluminum expansion tank - we offer numerous performance upgrades for your expansion tank. Especially if you're someone who likes to track your BMW, we recommend upgrading your expansion tank to avoid ruining your track day.
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Bav Auto Coolant Expansion Tank - With Level Sensor - E70 X5, E71 X6
Bav Auto Coolant Expansion Tank - With Level Sensor - E70 X5, E71 X6 ...
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T#:638093
Part#: 17138621092
In Stock
Sale - Save 20% $ 60.99

This product was last offered at the strikethrough price on
05-03-2026

$ 48.79 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 20%
$ 60.99

This product was last offered at the strikethrough price on
05-03-2026

$ 48.79 USD
Free Shipping on orders $49 and up
Add to Wish List
Replace your old expansion tank to prevent potential failure or leaks. Includes a brand new coolant level sensor.

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BMW Mini
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  • Expansion Tanks

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