Mishimoto Black Aluminum Coolant Expansion Tank — Fits 2002-2007 Subaru WRX, 2004-2016 STI

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SKU: MISMMRT-WRX-01EBK
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Sale price$188.95 Regular price$208.00
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

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Mishimoto Black Aluminum Coolant Expansion Tank for Subaru WRX/STI

Enhance your Subaru WRX or STI's cooling system and engine bay aesthetics with the Mishimoto Black Aluminum Coolant Expansion Tank. Designed to replace the failure-prone stock plastic unit, this tank is built for superior durability and performance.

Key Features:

  • Durable Construction: Crafted from high-quality, TIG-welded aluminum for exceptional strength and longevity, resisting cracks caused by extreme temperature fluctuations.
  • Increased Capacity: Offers a 50% greater coolant capacity than the factory tank, helping to maintain optimal engine temperatures under demanding conditions.
  • Stylish Finish: Features a sleek, anodized black finish that adds a custom, high-performance look to your engine bay, perfectly complementing other aftermarket cooling components.
  • Secure Fittings: Equipped with barbed fittings for a reliable and secure connection to your coolant lines.
  • Direct Fitment: Engineered for a precise fit in the 2002-2007 Subaru WRX and the 2004-2016 Subaru STI models.

The stock coolant expansion tank is a common weak point in Subaru performance vehicles, often failing due to repeated heat cycles. Mishimoto's aluminum replacement provides a robust solution, ensuring reliability even under aggressive driving or track use. Its increased capacity aids in heat dissipation, while the premium black finish offers a significant visual upgrade. This expansion tank is designed to integrate seamlessly with your existing cooling system, including the Mishimoto Performance Aluminum Radiator. Backed by the Mishimoto Lifetime Warranty, this is a smart investment for any Subaru enthusiast looking for enhanced performance and style. Upgrade your cooling system today with GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005-2006 Saab 9-2X Aero
2004-2006 Subaru Baja Turbo
2004-2005 Subaru Forester XT
2005 Subaru Forester XT Premium
2006-2008 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 XT
2002-2007 Subaru Impreza WRX
2004-2014 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX TR
2007 Subaru Impreza WRX STI Limited
2010 Subaru Impreza WRX STI Special Edition
2011-2014 Subaru Impreza WRX STI Limited
2015-2016 Subaru WRX STI Base
2015-2016 Subaru WRX STI Limited

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto Black Aluminum Coolant Expansion Tank for Subaru WRX/STI

Enhance your Subaru WRX or STI's cooling system and engine bay aesthetics with the Mishimoto Black Aluminum Coolant Expansion Tank. Designed to replace the failure-prone stock plastic unit, this tank is built for superior durability and performance.

Key Features:

  • Durable Construction: Crafted from high-quality, TIG-welded aluminum for exceptional strength and longevity, resisting cracks caused by extreme temperature fluctuations.
  • Increased Capacity: Offers a 50% greater coolant capacity than the factory tank, helping to maintain optimal engine temperatures under demanding conditions.
  • Stylish Finish: Features a sleek, anodized black finish that adds a custom, high-performance look to your engine bay, perfectly complementing other aftermarket cooling components.
  • Secure Fittings: Equipped with barbed fittings for a reliable and secure connection to your coolant lines.
  • Direct Fitment: Engineered for a precise fit in the 2002-2007 Subaru WRX and the 2004-2016 Subaru STI models.

The stock coolant expansion tank is a common weak point in Subaru performance vehicles, often failing due to repeated heat cycles. Mishimoto's aluminum replacement provides a robust solution, ensuring reliability even under aggressive driving or track use. Its increased capacity aids in heat dissipation, while the premium black finish offers a significant visual upgrade. This expansion tank is designed to integrate seamlessly with your existing cooling system, including the Mishimoto Performance Aluminum Radiator. Backed by the Mishimoto Lifetime Warranty, this is a smart investment for any Subaru enthusiast looking for enhanced performance and style. Upgrade your cooling system today with GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005-2006 Saab 9-2X Aero
2004-2006 Subaru Baja Turbo
2004-2005 Subaru Forester XT
2005 Subaru Forester XT Premium
2006-2008 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 XT
2002-2007 Subaru Impreza WRX
2004-2014 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX TR
2007 Subaru Impreza WRX STI Limited
2010 Subaru Impreza WRX STI Special Edition
2011-2014 Subaru Impreza WRX STI Limited
2015-2016 Subaru WRX STI Base
2015-2016 Subaru WRX STI Limited

Product Details

Product Description

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto Black Aluminum Coolant Expansion Tank for Subaru WRX/STI

Enhance your Subaru WRX or STI's cooling system and engine bay aesthetics with the Mishimoto Black Aluminum Coolant Expansion Tank. Designed to replace the failure-prone stock plastic unit, this tank is built for superior durability and performance.

Key Features:

  • Durable Construction: Crafted from high-quality, TIG-welded aluminum for exceptional strength and longevity, resisting cracks caused by extreme temperature fluctuations.
  • Increased Capacity: Offers a 50% greater coolant capacity than the factory tank, helping to maintain optimal engine temperatures under demanding conditions.
  • Stylish Finish: Features a sleek, anodized black finish that adds a custom, high-performance look to your engine bay, perfectly complementing other aftermarket cooling components.
  • Secure Fittings: Equipped with barbed fittings for a reliable and secure connection to your coolant lines.
  • Direct Fitment: Engineered for a precise fit in the 2002-2007 Subaru WRX and the 2004-2016 Subaru STI models.

The stock coolant expansion tank is a common weak point in Subaru performance vehicles, often failing due to repeated heat cycles. Mishimoto's aluminum replacement provides a robust solution, ensuring reliability even under aggressive driving or track use. Its increased capacity aids in heat dissipation, while the premium black finish offers a significant visual upgrade. This expansion tank is designed to integrate seamlessly with your existing cooling system, including the Mishimoto Performance Aluminum Radiator. Backed by the Mishimoto Lifetime Warranty, this is a smart investment for any Subaru enthusiast looking for enhanced performance and style. Upgrade your cooling system today with GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005-2006 Saab 9-2X Aero
2004-2006 Subaru Baja Turbo
2004-2005 Subaru Forester XT
2005 Subaru Forester XT Premium
2006-2008 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 XT
2002-2007 Subaru Impreza WRX
2004-2014 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX TR
2007 Subaru Impreza WRX STI Limited
2010 Subaru Impreza WRX STI Special Edition
2011-2014 Subaru Impreza WRX STI Limited
2015-2016 Subaru WRX STI Base
2015-2016 Subaru WRX STI Limited

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