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    Overflow and Expansion Tanks

    Maintain optimal coolant levels and prevent overheating in your Subaru with high-quality overflow/expansion tanks from Subispeed. Our selection includes a range of tanks designed to provide additional coolant capacity and effectively manage coolant expansion during temperature changes. These tanks are especially beneficial for Subaru WRX, STI, Forester, or Crosstrek owners who have upgraded their cooling systems or participate in high-performance driving. By increasing the coolant volume and accommodating expansion, overflow/expansion tanks help regulate coolant temperatures and reduce the risk of engine damage. Choose from reputable brands like Mishimoto, Cusco, and Perrin Performance to ensure durable construction and precise fitment. Upgrade your Subaru's cooling system with an overflow/expansion tank from Subispeed and enjoy improved cooling efficiency and peace of mind during all driving conditions.

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    17 Results

    COBB Tuning Subaru Coolant Overflow Tank - 2015-2021 Subaru WRX / STI

    800660

    COBB Tuning Subaru Coolant Overflow Tank - 2015-2021 Subaru WRX / STI

    $290.00
    Mishimoto Aluminum Coolant Expansion Tank - Polished - 2008-2021 Subaru WRX / STI

    8 In Stock

    MMRT-STI-08

    Mishimoto Aluminum Coolant Expansion Tank - Polished - 2008-2021 Subaru WRX / STI

    $253.99
    Mishimoto Aluminum Coolant Expansion Tank - 2002–2007 Subaru WRX / 2004–2016 STI

    12 In Stock

    MMRT-WRX-01EBK

    Mishimoto Aluminum Coolant Expansion Tank - 2002–2007 Subaru WRX / 2004–2016 STI

    $204.44
    Killer B Motorsport Upper Coolant Reservoir v2 with Barbed Fittings Black Finish - 2002-2007 Subaru WRX / 2004-2021 STI

    7 In Stock

    UTCRV2BA-B

    Killer B Motorsport Upper Coolant Reservoir v2 with Barbed Fittings Black Finish - 2002-2007 Subaru WRX / 2004-2021 STI

    $197.00
    Killer B Motorsport Upper Coolant Reservoir w/ AN Fittings Black - 2002-2007 Subaru WRX / 2004-2021 STI

    2 In Stock

    UTCRV2AN-B

    Killer B Motorsport Upper Coolant Reservoir w/ AN Fittings Black - 2002-2007 Subaru WRX / 2004-2021 STI

    $219.00
    Mishimoto Aluminum Coolant Expansion Tank - 2015-2021 Subaru WRX / STI / 2008-2014 Impreza

    9 In Stock

    MMRT-STI-08BK

    Mishimoto Aluminum Coolant Expansion Tank - 2015-2021 Subaru WRX / STI / 2008-2014 Impreza

    $253.99
    IAG Coolant Expansion Tank Black - 2002-2007 Subaru WRX / STI

    IAG-ENG-5301BK

    IAG Coolant Expansion Tank Black - 2002-2007 Subaru WRX / STI

    $239.99
    Koyorad All Aluminum Radiator Filler Neck - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    4 In Stock

    FN2320

    Koyorad All Aluminum Radiator Filler Neck - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    $98.20

    2 In Stock

    86636VA020E2

    Subaru RH Washer Cover JDM - K3X - 2015-2021 Subaru WRX (Levorg Only)

    $34.37
    Mishimoto Aluminum Coolant Overflow Tank - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    1 In Stock

    MMRT-BRZ-13BK

    Mishimoto Aluminum Coolant Overflow Tank - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    $247.67
    Mishimoto Aluminum Coolant Expansion Tank - 2002-2007 Subaru WRX/ 2004-2016 Subaru WRX STI

    6 In Stock

    MMRT-WRX-01E

    Mishimoto Aluminum Coolant Expansion Tank - 2002-2007 Subaru WRX/ 2004-2016 Subaru WRX STI

    $204.44
    Greddy Aluminum Radiator Filler Neck - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    16401690

    Greddy Aluminum Radiator Filler Neck - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    $266.00
    COBB Coolant Overflow Tank - 2022-2024 Subaru WRX

    800670

    COBB Coolant Overflow Tank - 2022-2024 Subaru WRX

    $305.00
    CSF Filler Neck with High Performance Radiator Cap (1.4 bar) - 2013-2016 Scion FR-S / 2013-2024 Subaru BRZ / 2017-2019 Toyota 86 / 2022-2024 GR86

    8044

    CSF Filler Neck with High Performance Radiator Cap (1.4 bar) - 2013-2016 Scion FR-S / 2013-2024 Subaru BRZ / 2017-2019 Toyota 86 / 2022-2024 GR86

    $139.00

    86636VA030B5

    Subaru LH Washer Cover JDM - E8H - 2015-2021 Subaru WRX / STI

    $37.73
    Mishimoto Aluminum Coolant Overflow Tank - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    MMRT-BRZ-13P

    Mishimoto Aluminum Coolant Overflow Tank - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

    $247.67
    COBB Subaru Coolant Overflow Tank - 2008-2014 Subaru WRX / STI

    800655

    COBB Subaru Coolant Overflow Tank - 2008-2014 Subaru WRX / STI

    $290.00

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