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Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
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User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008
User Media for: Moroso Aluminum Coolant Expansion Tank - Subaru WRX/STI 2002-2007 / Forester XT 2004-2008

Moroso Aluminum Coolant Expansion Tank

Subaru WRX/STI 2002-2007 / Forester XT 2004-2008

Read 21 Reviews | 10 Q&As
Part # 63784
$151.14
msrp: $188.92

In stock!
Ships today if ordered in
12 hrs 0 mins

Features & Product Details

RallySport Direct is proud to provide you with the Moroso Aluminum Coolant Expansion Tank. This is a direct replacement for your factory expansion tank designed to be more durable, have a larger coolant capacity, all while improving the engine aesthetics.

 

 

DETAILS:

  • 50% more capacity than the OEM tank
  • All aluminum construction
  • Billet aluminum filler neck
  • Polished finish
  • Moroso Racing Radiator Cap included with stock pressure range
  • Integral billet aluminum hose fittings
  •  

    Specifications

    Brand: Moroso
    Color: Silver
    Installation Hardware Included: No
    Material: Aluminum
    Cap Pressure: 14-18psi
    Mfgr. Warranty: 90 Days
    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.
    Standard

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    REVIEWS & CUSTOMER MEDIA

    21 Reviews
    4.3 out of 5 Stars
    5 Stars
    (13)
    4 Stars
    (4)
    3 Stars
    (2)
    2 Stars
    (1)
    1 Stars
    (1)
    Customer Photos and Videos
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Aluminum Coolant Expansion Tank ( Part Number: 63784)
    Moroso Coolant Expansion Tank (WRX 04) 1 year ago
    4out of 5stars

    So I bought a moroso coplant expansion tank a couple months ago, and now I’m having problems with the cap leaking. I drive a 2004 Subaru Impreza WRX 2.0L. The tank comes with the standard 14-18lbs cap, when I’m driving normal speed limits it’s fine no leaking cap. When I “get on it” some maybe 3200rpms the most from 3rd to 4. I don’t drive my car hard at all usually at all. A couple of days ago I spoke to a rep from a site that sells the same product for Moroso. We both came to the conclusion that maybe I should get the upgraded cap with a higher pressure range so the 19-21lbs cap. Put the cap on this morning went for a ride. At first I drove at normal speed to my destination parked and popped the hood, no leaks. On my way home I exhibited a more spirited drive shifting around 3200rpms etc. I get home I pull into my driveway popped the hood and I noticed it leaking from the new cap I just put on. I’m not sure what is happening other than when I filled the reservoir up we filled it completely to the rim. And I understand that the cap has a spring inside of it that compresses and expands once the pressure range of the cap is exceeded, maybe the expansion tank cap is bleeding the system at the same time of the excess fluid it does not need while doing so? I’m not sure but I’m keeping an eye on my temperature needle in the car while I’m driving it seemed to be fine which attributed to my belief that the system may be self bleeding via the cap’s spring and ridding itself of the excess fluid once above the car is above the optimal pressure range of the cap. It isn’t a constant leak, sometimes it leaks, sometimes it doesn’t. When I drive normally (regular speed limits) seems to be ok, when I “get on it” some is when I’m noticing the leaking of coolant.
      
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    Iain Mellows 2 years ago
    5out of 5stars

    Awsome product! fits & looks AMazing!! Perfect replacement for the original!!
      
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    Very nice! Sexy welds! 2 years ago
    5out of 5stars

    Bought this tank because my stock metal one was leaking at the base of the filler neck. Install was very easy, prolly a 2 out of 5 on difficulty. The tank fits perfect, however you will need to trim your rubber hoses so that they are not kinked after you install them on fittings. Install took less time than I expected. I would grab a couple new screw style hose clamps before install. Ended up having to replace one because it was leaking. The top two small hoses fit well without leakage, but the larger hoses might need a better clamp. Simple stuff. Very happy with the quality of this product. Keep in mind that the cap installs differently than stock, need to turn once, then push down and turn again till the tabs butt up against the stops on the filler next. Very easy, just pay attention. Mine even had paper instructions on how to install the cap properly.
      
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    03 WRX 2 years ago
    5out of 5stars

    Bought this expansion tank to replace the old OEM tank were coolant was seeping from on top. I was quite pleased to have found the item be very well made, and quite an upgrade to the old oem junk. Although it is way bigger than the old tank, it’s still lighter and yet has a heavy duty feel to it. Definitely recommend purchasing it if you are in a situation like mine. Also remember to wash the insides and trimming of the hoses is required but is easy to do.
      
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    Solid pick 3 years ago
    4out of 5stars

    All metal part, great quality, welds look great. Straight replacement fit for stock plastic part. Great additional for a more robust setup or simply if you want some engine bay bling!
      
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    QUESTIONS & ANSWERS

    • Q: replacement cap?  crankyfart1 year ago

      if this cap is spoilt or broken, how do we even get a replacement cap?
      • 0 of 0 people found the following answer helpful

        A:  It's an item we're able to special order from Moroso, please contact our sales department for info.

        Marcus E. @ RallySport Direct 1 year ago  
          
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    • Q: 2002 WRX  Dave4 years ago

      Will the OEM cap fit on this product?
    • Q: Fitment?  2015 sti noob5 years ago

      It says this won't fit a 2015 sti but I can't see a difference really. Do you offer one that will fit a 2015/16?
    • Q: FMIC fitment?  kuabara182602255 years ago

      I have an ETS FMIC, would this fit?
      • 0 of 1 people found the following answer helpful

        A:  This tank will most likely fit with the ETS FMIC, however we cannot guarantee compatibility because we have not tested them together.

        Zach G. @ RallySport Direct 5 years ago  
          
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