Mishimoto X-Line 3-Row Aluminum Radiator, 2008-2014 WRX & STi

Mishimoto X-Line 3-Row Aluminum Radiator, 2008-2014 WRX & STi



Available For Order!

Product Description

  • Free Shipping! (Not including Alaska or Hawaii)

  • 2008-2014 WRX
  • 2008-2014 STi
  • Brand: Mishimoto
  • Manufacturer's Part Number: MMRAD-STI-08X
  • Size: 28" x 21.8" x 2.5"
  • Primary Material: Aluminum
  • Primary Finish: Polished
  • UPC: 748354803488
  • Manufacturer's Warranty: Lifetime Warranty. Please see Mishimoto's website for full details.
  • We ship internationally! Please email us for international shipping quotes.
  • Image Notes: Product may not match picture depending on application
  • Kit Contents:
    Radiator cap
    2x Overflow nipple
    Magnetic drain plug

Manufacturer's Description:
The Mishimoto X-Line performance aluminum radiator for the 2008-2014 Subaru WRX and 2008-2015 STI is designed with a larger 3-row core to maximize cooling efficiency, boost engine functions, and most importantly protect your car from overheating. It is the ideal upgrade to the stock Subaru radiator whether you drive your vehicle daily or take it for track runs. The Mishimoto aluminum WRX and STI radiator features a lightweight triple core, 100% brazed aluminum, and polished end tanks, enhancing the overall performance of your engine. Every Mishimoto aluminum radiator is a direct stock fit making installation effortless with no cutting or modification required. All Mishimoto radiators come with a high pressure 1.3 bar Mishimoto radiator cap and, like all our aluminum radiators, this product comes with the unparalleled Mishimoto Lifetime Warranty.

• Direct fit for the 2008-2014 Subaru WRX/STI
• Premium radiator has 3-row (2" thick) core for improved strength and reliability.
• 16% thinner-than-stock tubes allow for more surface contact, increasing cooling efficiency.
• Greater density of rows for higher cooling capacity.
• More contact points for additional heat transfer.
• 3-row design creates more air turbulence, maximizing cooling efficiency
• Includes magnetic drain plug
• Includes a high-pressure 1.3 bar
• Mishimoto radiator cap
• Mishimoto Lifetime Warranty

This item is for Manual Transmission vehicles. For automatic applications, please purchase optional Mishimoto Universal Transmission Cooler Kit.


The provided Mishimoto radiator cap should replace the stock cap located on the expansion tank. The stock cap attached to the radiator should be installed on the Mishimoto Performance Aluminum Radiator. The Mishimoto radiator cap is a two way valve, while the stock radiator cap is a single valve. Due to the difference in construction, the Mishimoto cap cannot be used on the radiator. If the Mishimoto cap is fit on the radiator, overheating may occur.

It is the installer's responsibility to check all thermostat plugs, NPT plugs, line fittings, and other connections to assure they are fully tightened before operating the vehicle. Mishimoto recommends that you check all connections at regular intervals, especially during the first few miles after installation. For additional technical information, contact sales@mishimoto.com.

Purchase Includes
Mishimoto Radiator
Mishimoto Radiator Cap
Overflow Nipples - 2
Magnetic Drain Plug
Mishimoto Lifetime Warranty

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