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Mishimoto Aluminum Coolant Expansion Tank 2002-2007 WRX / 2004-2021 STI

SKU MMRT-WRX-01E
Save $53.39 Save $53.39
Original price $222.34
Original price $222.34 - Original price $222.34
Original price $222.34
Current price $168.95
$168.95 - $168.95
Current price $168.95

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!

Customer Reviews

Based on 5 reviews
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William T. Galyean
Mishimoto Aluminum Coolant Expansion Tank

My '06 STI already has a Mishimoto radiator and I finally got tired of looking at the old, stock expansion tank. When it was time to do an oil change, coolant flush and switch to Mishimoto Liquid Chill, I figured it to be the perfect time to switch to the Mishimoto expansion tank.
Perfect fit, easy install and looks much better.

William,

Thank you for your 5 Star Review of the Mishimoto Aluminum Coolant Expansion Tank. We are so glad to hear that you are enjoying the upgrade for your STI and that it was a perfect fit during installation. We are sure it looks much better than the stock tank and we hope you continue to enjoy it. Happy driving!

Regards,

M
MajTom
MajTom's Bugeye

Nice piece. Rugged construction. All the welds are heavy-duty. The part itself is about 1/2 the weight of oem. Slight hose trimming required.

MajTom,

Thank you for your 5 Star Review and added pics! The Subimods Team is glad to hear that you are satisfied with the construction and weight of the Mishimoto Aluminum Coolant Expansion Tank for your Bugeye. We appreciate your feedback and are always here to help with any trimming needs. Enjoy!

Regards,

J
J.
Looks good

Way better then stock and looks great

Josh,

We appreciate your 5 Star Review and added pic of the Mishimoto Aluminum Coolant Expansion Tank! Not only is a better look, but it is more durable and larger than OEM! Enjoy!

Regards,

Reviewer avatar
Michael Niehoff
love mine

i got the po;ished one expexting to have to polish it my self to give it that extra clean finish, but it came PERFECT! got to trim some hose but was super simple, anyine can do it!

Michael,

Thank you for your 5-Star Review of the Mishimoto Aluminum Coolant Expansion Tank! This tank is the best replacement for the plastic OEM tank that gets brittle and is prone to fail! The added durability of the TIG welded aluminum tank ensures no leaks whatsoever! The polished finish is an amazing look! Enjoy!

Regards,

G
Gadal the Israelite
Nice

Fitment 9/10. Needed cut an inch from the bottom hose as instructed. Easy swap, looks clean on my 04 STi

Gadal,

Thank you for the 5 Star Review! The Mishimoto Aluminum Coolant Expansion Tank provides more coolant capacity and will not fail like the plastic OEM tank does over time! On top of that it looks great in the engine bay!

Regards,

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