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£334.09 (Incl. VAT)
  • Direct fit for the 2008-2014 WRX and 2008-2019 STI
  • Full aluminium construction including durable, TIG-welded end tanks
  • Two-row, 1.65" thick brazed aluminium core
  • Increased fluid capacity and optimal heat dissipation
  • Additional features below


  • Direct fit for the 2008-2014 WRX and 2008-2019 STI
  • Full aluminium construction including durable, TIG-welded end tanks
  • Two-row, 1.65" thick brazed aluminium core
  • Increased fluid capacity and optimal heat dissipation
  • Provides efficient temperature reduction for use on the street, track, rallycross, or autocross course
  • Includes 1.3 Bar High-Pressure Radiator Cap , which effectively raises the boiling point of engine coolant and provides a safer, more efficient system
  • Includes Magnetic Drain Plug to capture any metallic debris/fragments in your cooling system
  • Mishimoto Lifetime Warranty


The Mishimoto performance aluminium radiator for the WRX and STI is designed and engineered to maximize cooling efficiency by up to 30%, 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 WRX radiator features a lightweight dual core, 100% brazed aluminium, and polished end tanks, enhancing the overall performance of your engine. Every Mishimoto aluminium radiator is a direct fit, making installation effortless with no cutting or modification required. This radiator comes with a Mishimoto 1.3 Bar High-Pressure Radiator Cap and, like all our aluminium radiators, comes with the Mishimoto Lifetime Warranty.


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


This item is for Manual Transmission vehicles. For automatic applications, please purchase optional Mishimoto transmission cooler (P/N: MMTC-U) Use small fitting for: 08–09 WRX 08–15 STI Use large fitting for: 10+ WRX 05–09 Legacy GT 06–09 Legacy GT SPEC-B 05–09 Outback XT 09+ Forester XTThe 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 small fitting for: 2008–2009 Subaru WRX 2008–2019 Subaru STIUse large fitting for: 2010–2014 Subaru WRX 2005–2009 Subaru Legacy GT 2005–2009 Subaru Outback XT 2009–2013 Subaru Forester XT



Engine Codes EJ255EJ257
Chassis Codes GEGH
Fits 08–14 WRX
08–19 STI
05 Outback
05–06 Legacy
06 Outback XT
06–09 Legacy GT Spec.B
07–09 Legacy GT Limited
07–09 Outback XT Limited
08 Outback 2.5 XT
08 Legacy GT
09 Forester XT
09–10 Impreza 2.5 GT
09–10 Forester XT Limited
10+ WRX Limited
10+ WRX Premium
10+ Forester XT Premium
10 STI Special Edition
11 STI Limited
11 Forester XT Touring


Material Aluminum
Overall Height553.7 mm
DPI 13091/13093
Drain Plug Length 11.9 mm
Drain Plug Thread Size (M12) x 1.5
Overall Length711.2 mm
Tank Wall Thickness 2 mm
Outlet39 mm
Inlet39 mm
Coolant Capacity 2.21
Dual PassFalse
Overall Width54.6 mm
Core Length 687.8 mm
Core Height 340 mm
Core Thickness 41.9 mm
Fill Neck 3.175 cm
Overall Length (in) 21.80
Overall Height (in) 28.00
Overall Width (in) 2.15

Mishimoto Automotive (“Mishimoto”) warrants their products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorised dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.

For our complete warranty policy, please click here.

Mishimoto Lifetime Warranty on ALL Products
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