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Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
Community Media
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014
User Media for: Mishimoto Aluminum Coolant Expansion Tank - Subaru WRX 2002-2007 / Subaru STI 2004-2014

Mishimoto Aluminum Coolant Expansion Tank

Subaru WRX 2002-2007 / Subaru STI 2004-2014

Read 16 Reviews | 10 Q&As
Part # MMRT-WRX-01E
$143.95
msrp: $191.90

In stock!
Ships today if ordered in
13 hrs 23 mins

Features & Product Details

Get your replacement coolant expansion tanks at RallySport Direct!

On this page, you are looking at the Mishimoto Aluminum Coolant Expansion Tank. This is a 100% aluminum unit that is TIG-welded, and it improves the underhood aesthetics especially when compared to the OEM unit. Over time and mileage, the OEM coolant expansion tank can fail due to years of temperature variances. The Mishimoto unit is super durable, and it looks great as well.

Here are the details:

  • Direct fitment for 02-07 WRX models and 04-16 STI models
  • 50% greater capacity than the stock plastic expansion tank
  • 100% aluminum fully-welded construction for maximum durability during repeated cold and hot transitions
  • Leak-free welded barb fittings
  • Fits with both stock and Mishimoto radiator caps
  • Polished aluminum finish
  • Specifications

    Brand: Mishimoto
    Color: Silver
    Installation Hardware Included: Yes
    Material: Aluminum
    Cap Pressure: 19psi
    Mfgr. Warranty: Limited Lifetime
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days


    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
    RallySport Guarantee

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    16 Reviews
    3.8 out of 5 Stars
    5 Stars
    (8)
    4 Stars
    (4)
    3 Stars
    (0)
    2 Stars
    (0)
    1 Stars
    (4)
    Customer Photos and Videos
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Mishimoto Aluminum Coolant Expansion Tank ( Part Number: MMRT-WRX-01E)
    Fitment 4 months ago
    5out of 5stars

    This does not fit with FMIC. Looks good but too bad it doesn’t fit with this combination.
      
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    2 of 2 people found the following review helpful
    Buyer Beware 1 year ago
    1out of 5stars

    Our Mishimoto Coolant tank failed after two races. The pictures show were poor welding caused a fracture. Mishimoto WOULD NOT WARRANTY the tank as we purchased it two years ago and no longer have the receipt despite the fact that our race team promoted their products on a number of builds.
      
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    Install is so easy, even a cave-man could do it! 1 year ago
    5out of 5stars

    Even though I only have 67k miles on my car, the radiator expansion tank was starting to deteriorate. I suppose parts are now made with expiration dates. Install was very easy. Definitely recommend this to anyone whose expansion tank is starting to corrode.
      
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    Well built, easy to install  1 year ago
    4out of 5stars

    Though slightly overpriced, this expansion tank is a good upgrade from the trash Subaru decided to equip vehicles with. It's easy to install. Even people with little mechanical experience can do it.
      
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    1 of 1 people found the following review helpful
    It did crack as well -_- 2 years ago
    1out of 5stars

    It crack where there is a small weld of like 2 inch or less.. Compare side by side the Morosso one its welded on the entire bracket.. Mishimoto didnt weld enough and thats what happen with the cold and hot temperature, failure waiting to happen. Its warrantied yes.. but worth the money and time for shipping etc?!!? No for me. Private shop welded it for 10 bucks and was ready to go in an hour. Bracket Fully welded..like it should have been in the beginning.
      
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    QUESTIONS & ANSWERS

    • Q: FMIC and no fitment....  tuftsy1 year ago

      Do not buy if you have a FMIC, this product will not clear the piping!!! This is huge and should be noted in product....confirmed on Mishimoto FMIC and Perrin FMIC.....
    • Q: the mishimoto aluminum coolant expansion tank  MOMOTORSPORTS3 years ago

      Hi, I am interested in buying this, but I have seen another version online for the same application but it features the bottom bracket, something that is missing from the pics that are featured here. It seems to be a revised version, is this the same offered at rally sport direct?
      • 0 of 0 people found the following answer helpful

        A:  These photos on our site may be a bit outdated. We will get some new ones posted up, it should have the bottom bracket on this part. Thank you for bringing this to our attention.

        Tyler G.
          
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    • Q: Fitment  Yuri5 years ago

      Will this tank create kinks or fitment issues with the Cobb airbox?
    • Q: Stock cap?  esnbrgr295415 years ago

      Recently bought this, fitment is great but prefer not to run a 1.3bar cap on both my radiator and expansion tank. Stock cap wont fit. Is there another option or cap that fits this tank that is 1.1bar rating?

    This Part Fits