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Expansion Tank

The coolant expansion tank in your MINI or BMW gives additional fluid a place to go after expansion and contraction from temperature changes. But because the expansion tank is subjected to extreme temperature changes on a regular basis, it can often develop cracks or splits in seams, and become discolored with age. If your coolant expansion tank is similarly worn, replace it with a new unit from Bavarian Autosport. Remember to also stock up on new coolant as you'll need to completely drain the coolant system to replace it.

Bavarian Autosport has been helping BMW and MINI enthusiasts maintain, repair, and upgrade their vehicles for more than 43 years. Every item we sell comes with a 100% satisfaction guarantee and a MINImum one-year warranty, and a two-year warranty on every part with the Bavarian Autosport brand. Because we use the same manufacturers as BMW, all of our parts meet or exceed the OEM equipment. We have a full team of advisors ready to answer your questions and help you find the right part for your MINI or BMW by phone or email. We even give you free shipping on most orders over $99 and because we're located in tax-free New Hampshire, there is no added sales tax for any purchase.

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  • Expansion tank

    Radiator Expansion Tank - Genuine BMW

    PART#: 17 11 1 741 167

    BRAND: Genuine BMW

    This part is model specific. Please select a vehicle above to ensure that you get the correct part.

    $149.79 / each
    Typically ships in 3-5 days.
    NOTE: Upgrading to expedited shipping will not shorten the “ships in” time listed above.

    Ships for free if total order exceeds $99
  • Expansion tank

    Coolant Expansion Tank

    PART#: 17 11 2 225 543

    BRAND: Genuine BMW

    This part is model specific. Please select a vehicle above to ensure that you get the correct part.

    $125.27 / each
    Typically ships in 3-5 days.
    NOTE: Upgrading to expedited shipping will not shorten the “ships in” time listed above.

    Ships for free if total order exceeds $99
  • Radiator Cap - Genuine BMW

    Radiator Cap - Genuine BMW

    PART#: 17 11 2 227 683

    BRAND: Genuine BMW

    This part is model specific. Please select a vehicle above to ensure that you get the correct part.

    $18.77 / each

    Availability: Currently in stock

    Ships for free if total order exceeds $99