Mishimoto Aluminum Expansion Tank — Fits 2002-2007 Subaru WRX / 2004-2016 STI

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SKU: MISMMRT-WRX-01E
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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.

Watch in action

Mishimoto Aluminum Expansion Tank for 2002-2007 Subaru WRX & 2004-2016 STI

Enhance the cooling system and engine bay aesthetics of your Subaru WRX (2002-2007) or STI (2004-2016) with the Mishimoto Aluminum Expansion Tank. This high-quality upgrade replaces the stock plastic expansion tank, offering superior durability, increased capacity, and a polished look that complements performance modifications.

Key Features and Benefits:

  • Durable Aluminum Construction: Crafted from high-grade, TIG-welded aluminum, this tank is built to withstand extreme temperatures and resist cracking, ensuring long-term reliability.
  • Increased Capacity: Offers a 50% increase in coolant capacity over the stock unit, contributing to more stable engine temperatures under demanding conditions.
  • Polished Finish: Features a brilliant polished finish that adds a custom, high-performance look to your engine bay, making it a standout component.
  • Direct Fitment: Engineered for a precise fit with the stock or Mishimoto Performance Aluminum Radiator for your specific Subaru model, simplifying installation.
  • Enhanced Reliability: Eliminates the common failure point of plastic expansion tanks, which are prone to degradation and leaks due to repeated heat cycles.

The Mishimoto Aluminum Expansion Tank is an essential upgrade for any Subaru WRX or STI owner looking to improve cooling system performance and reliability. Its robust construction and attractive finish make it a perfect addition to both daily drivers and track-focused machines. Invest in quality cooling components from Mishimoto for peace of mind and optimal performance. Available now at 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 Aluminum Expansion Tank for 2002-2007 Subaru WRX & 2004-2016 STI

Enhance the cooling system and engine bay aesthetics of your Subaru WRX (2002-2007) or STI (2004-2016) with the Mishimoto Aluminum Expansion Tank. This high-quality upgrade replaces the stock plastic expansion tank, offering superior durability, increased capacity, and a polished look that complements performance modifications.

Key Features and Benefits:

  • Durable Aluminum Construction: Crafted from high-grade, TIG-welded aluminum, this tank is built to withstand extreme temperatures and resist cracking, ensuring long-term reliability.
  • Increased Capacity: Offers a 50% increase in coolant capacity over the stock unit, contributing to more stable engine temperatures under demanding conditions.
  • Polished Finish: Features a brilliant polished finish that adds a custom, high-performance look to your engine bay, making it a standout component.
  • Direct Fitment: Engineered for a precise fit with the stock or Mishimoto Performance Aluminum Radiator for your specific Subaru model, simplifying installation.
  • Enhanced Reliability: Eliminates the common failure point of plastic expansion tanks, which are prone to degradation and leaks due to repeated heat cycles.

The Mishimoto Aluminum Expansion Tank is an essential upgrade for any Subaru WRX or STI owner looking to improve cooling system performance and reliability. Its robust construction and attractive finish make it a perfect addition to both daily drivers and track-focused machines. Invest in quality cooling components from Mishimoto for peace of mind and optimal performance. Available now at 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 Aluminum Expansion Tank for 2002-2007 Subaru WRX & 2004-2016 STI

Enhance the cooling system and engine bay aesthetics of your Subaru WRX (2002-2007) or STI (2004-2016) with the Mishimoto Aluminum Expansion Tank. This high-quality upgrade replaces the stock plastic expansion tank, offering superior durability, increased capacity, and a polished look that complements performance modifications.

Key Features and Benefits:

  • Durable Aluminum Construction: Crafted from high-grade, TIG-welded aluminum, this tank is built to withstand extreme temperatures and resist cracking, ensuring long-term reliability.
  • Increased Capacity: Offers a 50% increase in coolant capacity over the stock unit, contributing to more stable engine temperatures under demanding conditions.
  • Polished Finish: Features a brilliant polished finish that adds a custom, high-performance look to your engine bay, making it a standout component.
  • Direct Fitment: Engineered for a precise fit with the stock or Mishimoto Performance Aluminum Radiator for your specific Subaru model, simplifying installation.
  • Enhanced Reliability: Eliminates the common failure point of plastic expansion tanks, which are prone to degradation and leaks due to repeated heat cycles.

The Mishimoto Aluminum Expansion Tank is an essential upgrade for any Subaru WRX or STI owner looking to improve cooling system performance and reliability. Its robust construction and attractive finish make it a perfect addition to both daily drivers and track-focused machines. Invest in quality cooling components from Mishimoto for peace of mind and optimal performance. Available now at 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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