Overflow & Expansion Tanks

Whether you want to finish off the look of a tucked bay, or you just want to replace the dull, plastic OEM tank, this is the place for your Subaru! 

Overflow & Expansion Tanks

Whether you want to finish off the look of a tucked bay, or you just want to replace the dull, plastic OEM tank, this is the place for your Subaru! 

Showing 1 - 11 of 11 items
  • This product was designed to create more space in the engine compartment by combining two reservoirs into a single component. For anyone running a larger radiator, or custom intercooler tubing, this frees up valuable space with an extremely rugged solution.

    The plastic reservoirs are replaced with 1/8” thick laser cut and formed aluminum that is handed TIG welded to provide reliability under the most severe conditions. Mounts to OEM brackets, uses OEM fasteners, OEM washer pump, and OEM caps pop right on. Caps WILL NOT pop off even under the most extreme use!

    Dual tanks take less space so you no longer need to remove the washer reservoir to work on the driver side of the engine; spark plugs, coils, etc… This Dual Tank setup is ideal for front mount intercoolers and aftermarket radiators that require the removal or relocation of the coolant expansion tank. Plus it frees up additional space in the front of the engine bay.

    All fittings and hoses are DOT approved, meaning they cost more but are actually designed to work under the hood of a car.

    Coolant fittings are not included and will need to be purchased separately.

    Subaru
  • Discontinued product

    NOTE: This product number has been discontinued by the manufacturer.

    This product was designed to create more space in the engine compartment. Combining two reservoirs into a single component frees up space for intercooler tube placement, easier maintenance, access to the engine, and durability.

    The OEM plastic reservoirs are replaced with CNC laser cut and formed aluminum that is TIG welded by hand to provide reliability under the most severe conditions. CNC machined cap retainers assure these caps will never pop off. All fittings and hoses are DOT approved, meaning they cost more, but are actually designed to provide reliability under extreme temperatures and chemical exposure.

    Vehicle Fitment2002-2005 WRX, 2004-2005 STi

    Subaru
  • Get that plastic blob of an overflow tank out of your engine bay. Stock plastic tanks are prone to failure due to repeated hot and cold cycles, and they create a horrible eyesore as they lurk in your engine bay. Mishimoto’s 2008+ STI / WRX coolant overflow tank is constructed from durable, TIG-welded aluminum for optimal durability and longevity.

  • Add some additional reliability and engine bay styling with the Mishimoto Subaru WRX 2008–2014 Aluminum Coolant Expansion Tank. Stock coolant expansion tanks are prone to failure after years of constant temperature variations. The Mishimoto tank is constructed from durable, TIG-welded aluminum with barbed fittings for optimal durability and longevity. 

    Subaru
  • The PERRIN coolant tank adds clearance for aftermarket intercooler piping and is a great compliment to competitive kits that don’t include one. The universal design will work with nearly all coolant systems that have OEM over flow tanks.

    Scion
    Subaru
  • This product was designed to create more space in the engine compartment by combining two reservoirs into a single component. For anyone running a larger radiator, or custom intercooler tubing, this frees up valuable space with an extremely rugged solution.

    Subaru
  • Discontinued product

    NOTE: This product number has been discontinued by the manufacturer. 

    This product retains all of the function of the Turbo reservoir using the correct OEM cap (non-Subaru, or aftermarket radiator caps will NOT allow the system to work correctly), allowing air to escape the cooling system. 

    Subaru
  • Replace your ugly OEM plastic coolant overflow tank with a sleek one from PERRIN Performance!

    Subaru
  • Add some additional reliability and engine bay styling with the Mishimoto Subaru WRX 2002–2007 / STI 2004–2014 Aluminum Coolant Expansion Tank. Stock coolant expansion tanks are prone to failure after years of constant temperature variations. The Mishimoto tank is constructed from durable, TIG-welded aluminum with barbed fittings for optimal durability and longevity. This expansion tank provides a 50% increase in capacity compared to the stock unit. It features a polished finish that will look great in your engine bay, and it matches the Mishimoto Subaru WRX/STI Performance Aluminum Radiator! The Mishimoto Coolant Expansion Tank is engineered for perfect fitment in the 2002–2007 WRX and the 2004–2014 STI!

    Subaru
  • Discontinued product

    NOTE: This product number has been discontinued by the manufacturer.

    SUPERSEDED BY: #DWR1-B

    This product was designed to create more space in the engine compartment by combining two reservoirs into a single component. For anyone running a larger radiator, or custom intercooler tubing, this frees up valuable space with an extremely rugged solution.

    Designed to work with 2002-2005 WRX and STI models

    Subaru
Showing 1 - 11 of 11 items