Rein BMW Coolant Expansion Tanks for BMW 6 Series F13 (2012+)

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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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OEM Rein Expansion Tank - F01,F06,F10,F12,F13
OEM Rein Expansion Tank - F01,F06,F10,F12,F13
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T#:555024
Part#: 17137647283
In Stock
Sale - Save 5% $ 118.99

This product was last offered at the strikethrough price on
06-29-2026

$ 113.04 USD
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Sale - Save 5%
$ 118.99

This product was last offered at the strikethrough price on
06-29-2026

$ 113.04 USD
Free Shipping
Add to Wish List

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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Expansion Tank
Expansion Tank
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:593074
Part#: 17137601948
Back Ordered
Sale - Save 5% $ 118.99

This product was last offered at the strikethrough price on
06-29-2026

$ 113.04 USD
Free Shipping
Add to Wish List
Sale - Save 5%
$ 118.99

This product was last offered at the strikethrough price on
06-29-2026

$ 113.04 USD
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Add to Wish List
Cooling system expansion tank
BMW Expansion Tank With Cap - 17137601948
BMW Expansion Tank With Cap - 17137601948
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Limited Qty Sale
Free Shipping on orders $49 and up
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$ 97.99

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

$ 87.99 USD
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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Intercooler Expansion Tank
Intercooler Expansion Tank
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:584477
Part#: 17137647281
Ships in 3 Business Days
Sale - Save 5% $ 71.99

This product was last offered at the strikethrough price on
06-29-2026

$ 68.39 USD
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Sale - Save 5%
$ 71.99

This product was last offered at the strikethrough price on
06-29-2026

$ 68.39 USD
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Rein Expansion Tank Cap
Rein Expansion Tank Cap
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:384807
Part#: 17117639021
Ships in 1-2 days
Sale - Save 5% $ 16.99

This product was last offered at the strikethrough price on
06-29-2026

$ 16.14 USD
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$ 16.99

This product was last offered at the strikethrough price on
06-29-2026

$ 16.14 USD
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Cap for plastic expansion tank
BMW Expansion Tank Kit - 17137647283
BMW Expansion Tank Kit - 17137647283
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Rein - Corporate Logo
T#:46616005
Part#: EPK0151
Ships in 3 Business Days
Sale - Save 6% $ 100.99

This product was last offered at the strikethrough price on
06-29-2026

$ 95.28 USD
Free Shipping on orders $49 and up
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Sale - Save 6%
$ 100.99

This product was last offered at the strikethrough price on
06-29-2026

$ 95.28 USD
Free Shipping on orders $49 and up
Add to Wish List
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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