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Heating and Cooling› Overflow Tanks and Catch Cans
Mishimoto
Mishimoto Subaru 02-07 WRX/ 04-14 STI WRX/STI Aluminum Coolant Expansion Tank
SKU: M00C MMRT-WRX-01E
Moderate — 2–4 hours
Overview
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Part #: MMRT-WRX-01E
Add some additional reliability and engine bay styling with the Mishimoto Subaru WRX/STI 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-percent increase in capacity compared to the stock unit. It features a polished silver or anodized black finish that will look great in your engine bay, and it and matches the Mishimoto Performance Aluminum Radiator! The Mishimoto Coolant Expansion Tank is engineered for perfect fitment in the 2002-2007 WRX and the 2004-2016 STI! As with all our products, this expansion tank includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship.
Features:
- Direct fit for the 2002-2007 Subaru WRX and 2004-2016 Subaru WRX STI
- 50% greater capacity than 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 stock and Mishimoto radiator caps
- Polished aluminum finish matches the Mishimoto Subaru WRX/STI Performance Aluminum Radiator
- Mishimoto Lifetime Warranty
Aluminum Coolant Expansion Tank fits Subaru WRX 2002-2007 / STI 2004-2016
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | Mishimoto |
| Part Number | M00C MMRT-WRX-01E |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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