WRX STI GRB GH8 08-13 "X-LINE 3 ROW" Radiator

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Mishimoto Performance Aluminum Radiator for Subaru WRX and STI X-Line, 08+

The Mishimoto X Line performance aluminum radiator for the 08+ Subaru WRX and 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 OEM 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 a great warranty including accident protection.
Overall Size
28" x 21.8" x 2.5"
Core Size
13.39" x 27.09"
Core Thickness
Tank Wall Thickness
Fill Neck
Fill Neck Thickness
Drain Plug Thread Size
(M16) .06"
Drain Plug Thread Length
Purchase Includes
Mishimoto Radiator
Mishimoto Radiator Cap
Overflow Nipples - 2
Magnetic Drain Plug
Limited Lifetime Warranty
Engine Codes
Chassis Codes
Also Fits
2011 Impreza WRX STI Limited
2011 Forester XT Touring
2010+ Impreza WRX Limited
2010+ Impreza WRX Premium
2010+ Forester XT Premium
2010 Impreza WRX STI Special Edition
2009 - 2010 Impreza 2.5 GT
2009 - 2010 Forester XT Limited
2009 Forester XT
2008+ Impreza WRX STI
2008+ Impreza WRX
2008 Outback 2.5 XT
2008 Legacy GT
2007 - 2009 Outback XT Limited
2007 - 2009 Legacy GT Limited
2006 - 2009 Legacy GT Spec.B
2006 Outback XT
2005 - 2006 Legacy
2005 Outback

Use small fitting for:
08-09 Impreza WRX
2008+ Impreza WRX STI
Use large fitting for:
05-09 Legacy GT
06-09 Legacy GT SPEC-B
05-09 Outback XT
2009+ Forester XT
2010+ Impreza WRX

This item is for Manual Transmission vehicles. For automatic applications, please purchase optional Mishimoto transmission cooler (P/N: MMTC-U)
 Mishimoto Performance (MP), warrants all of its products under its 'no questions asked' limited lifetime warranty policy. Regardless of the defect in product, Mishimoto will replace the original product. Warranty claims must be accompanied by the original sales receipt from an authorized dealer. 

A trained professional should install all MP products. Any issues with compatibility or installation should be addressed before attempting to install the product. 

The purchaser's remedy for breach of this limited warranty, exclusive of all other remedies provided by law, is expressly limited to repair or replacement of any part or parts. All products returned for warranty consideration must be returned to MP with all transportation expenses prepaid.

MP shall not be responsible for damages to its products or injury to persons using the products in any manner that would constitute improper operation, including but not limited to: incorrect opening of radiator pressure caps, burst hoses, unintended application or usage not intended by MP, negligence, improper installation, or any other use that may cause damages or injury. MP shall not be responsible for injury or harm to persons or property when caused by persons or vehicles using its products. 

Accident Protection 

Mishimoto, under its no questions asked warranty policy, will provide a warranty for all claims including vehicles involved in accidents. Warranty claims must include pictures of the accident and an official police report, and must be within three months of the accident. 

Fitment Disclaimer

All Mishimoto products are engineered to fit with OEM applications, as well as other Mishimoto products.

Mishimoto will not be held responsible for fitment issues caused by attempted installation of additional aftermarket parts. This includes, but is not limited to, performance parts and any other non-OEM replacement parts. Fitment with different brands cannot be guaranteed.

Furthermore, Mishimoto will not be held responsible for fitment issues caused by an accident. Many times, clearances needed for installation are very strict. If a vehicle has been involved in a front-end accident, available space for a product such as a thicker aluminum radiator may be compromised.

For all warranty claims, please contact us.


Brand Mishimoto
Shipping Weight 10.0000kg
Shipping Width 0.300m
Shipping Height 0.700m
Shipping Length 0.550m
Shipping Cubic 0.115500000m3

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