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

Name: Mishimoto Aluminum Coolant Expansion Tank 2002-2007 WRX / 2004-2016 STI
Brand: Mishimoto
SKU: MMRT-WRX-01E
Price: 181.05 USD
Availability: InStock
Rating: 5.0 (10 reviews)

$181.05

$213.00

$213.00 - $213.00

$213.00

$181.05 - $181.05

$181.05

-15%

16 In Stock, Usually Ships within 1-2 Business Days

SKU MMRT-WRX-01E

by Mishimoto

▶ Vehicle Fitments

Year	Make	Model
2004	Subaru	STI
2005	Subaru	STI
2006	Subaru	STI
2007	Subaru	STI
2008	Subaru	STI
2009	Subaru	STI
2010	Subaru	STI
2011	Subaru	STI
2012	Subaru	STI
2013	Subaru	STI
2014	Subaru	STI
2015	Subaru	STI
2016	Subaru	STI
2017	Subaru	STI
2018	Subaru	STI
2019	Subaru	STI
2020	Subaru	STI
2021	Subaru	STI
2002	Subaru	WRX
2003	Subaru	WRX
2004	Subaru	WRX
2005	Subaru	WRX
2006	Subaru	WRX
2007	Subaru	WRX

DETAILS

Upgrade your engine bay’s reliability and style with the Mishimoto Aluminum Coolant Expansion Tank. Designed to replace the OEM plastic tank, which is prone to cracking or leaking after years of constant heat cycling, this tank provides a durable and visually striking solution for your Subaru WRX or STI.

Features

Durable Construction – TIG-welded aluminum body with barbed fittings for long-lasting performance.
Increased Capacity – 50% larger than the stock expansion tank, helping maintain optimal coolant levels under high-performance conditions.
Engine Bay Styling – Polished Aluminum finish for a clean, high-quality look that complements the Mishimoto Performance Aluminum Radiator.
Perfect Fitment – Designed for 2002–2007 WRX and 2004–2016 STI, compatible with both stock and Mishimoto radiator caps.
Direct Replacement – No modifications required; installs cleanly and securely in your engine bay.

Installation Guide

Easy install

Had to cut some hoses to make it fit but other than that went right in. Looks nice and doesn’t leak. Took 45 minutes max.

Hello,

Thank you for your positive review! We are glad to hear that the installation of the Mishimoto Aluminum Coolant Expansion Tank was easy for you. Thank you for choosing Subimods!

Regards,

Expansion tank

Just installed, very easy be ready to cut som hoses especially if you upgraded to silicone as I did. Thanks guy fast shipping and quality products every time.

JR,

We are glad the expansion tank was easy to install and works well with your upgraded silicone hoses. Your continued support means a lot to us. Thank you for your 5 Stars!

Regards,

Aluminum Coolant Expansion Tank

Perfect addition to my Aluminum radiator!!

James,

Thank you for your 5 Star Review! We are glad to hear that the aluminum coolant expansion tank was the perfect addition to your aluminum radiator. We appreciate your support and hope it continues to serve you well.

Regards,

100% recommend

Really ties the engine bay together. I was tired of looking at the bulky plastic reservoir amongst all the aftermarket components installed. This was like the icing on the cake.

Brant,

Thank you for your 5 Star Review. We are thrilled that the Mishimoto expansion tank ties your engine bay together and replaces the bulky plastic reservoir so seamlessly. It is the perfect finishing touch for your setup!

Regards,

Works on 15 WRX STI great replacement from OEM plastic, no issues

Joshua,

Thank you for sharing! The Mishimoto Aluminum Coolant Expansion Tank was a great upgrade for your 2015 WRX STI, especially as a replacement for the OEM plastic one! Enjoy!

Regards,

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

Installation Guide

Customer Reviews

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