Rein BMW Coolant Expansion Tanks for BMW 7 Series F01 (2009+)

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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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Intercooler Expansion Tank
Intercooler Expansion Tank
Rein - Corporate Logo
T#:584477
Part#: 17137647281
Ships in 3 Business Days
$ 71.99 USD
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$ 71.99 USD
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BMW Expansion Tank With Cap - 17137601948
BMW Expansion Tank With Cap - 17137601948
Rein - Corporate Logo
T#:46616024
Part#: EPK0141
In Stock
$ 97.99

This product was last offered at the strikethrough price on
06-01-2026

$ 87.99 USD
Only 1 available at this price
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$ 97.99

This product was last offered at the strikethrough price on
06-01-2026

$ 87.99 USD
Only 1 available at this price
Limited Qty Sale
Free Shipping on orders $49 and up
Add to Wish List
The coolant expansion tank provides a reservoir for excess coolant as it expands and contracts with temperature fluctuations. Constant exposure to these extreme changes can eventually cause the tank to crack or fail.
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Expansion Tank
Expansion Tank
Rein - Corporate Logo
T#:593074
Part#: 17137601948
Ships in 3 Business Days
$ 118.99 USD
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$ 118.99 USD
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Cooling system expansion tank
Rein Expansion Tank Cap
Rein Expansion Tank Cap
Rein - Corporate Logo
T#:384807
Part#: 17117639021
In Stock
$ 16.99 USD
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$ 16.99 USD
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Cap for plastic expansion tank
BMW Expansion Tank Kit - 17137647283
BMW Expansion Tank Kit - 17137647283
Rein - Corporate Logo
T#:46616005
Part#: EPK0151
Ships in 3 Business Days
$ 100.99 USD
Only available at this price
Free Shipping on orders $49 and up
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$ 100.99 USD
Only available at this price
Free Shipping on orders $49 and up
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Replace your damaged expansion tank to prevent coolant loss or potential overheating issues. his item fits the following BMW Chassis: F01,F02,F06,F10,F12,F13 Fits BMW Engines including: N54,N55,N57N
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