X-Line Performance Aluminum Radiator, fits Subaru WRX 2008-2014/STI 2008-2021
Whether you’re logging miles on your daily commute or chasing lap times at the track, keeping your Subaru’s flat-four cool is key to reliability and performance. The factory radiator’s limited capacity can quickly become a bottleneck under demanding conditions, putting your engine at risk of overheating and costly damage. The Mishimoto X-Line Performance Aluminum Radiator for the 2008–2014 Subaru WRX and 2008–2021 Subaru STI is designed to be the ultimate solution, offering maximum cooling efficiency and durability for any driving environment. -- Engineered with a larger triple-row core, this radiator delivers significantly improved heat dissipation to keep coolant temperatures in check, even under extreme loads. Its 100% brazed aluminum construction and TIG-welded polished end tanks provide superior strength and longevity compared to the stock unit, while the lightweight design helps maintain vehicle balance and performance. The direct OEM fit ensures an easy, no-modification installation, so you can spend less time in the garage and more time enjoying your Subaru. -- Every Mishimoto X-Line Performance Radiator includes a high-pressure 1.3 bar radiator cap to raise the boiling point of your coolant, offering additional protection against overheating. Additionally, a second radiator cap is included for use on the expansion tank. Backed by the Mishimoto Lifetime Warranty with accident protection, this radiator is built to keep your WRX or STI running cool and strong for years to come.
- 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
Application Summary:
| Year |
Make/Model |
| 2009-2013 |
Subaru Forester |
| 2008-2014 |
Subaru Impreza |
| 2005-2009 |
Subaru Legacy |
| 2005-2009 |
Subaru Outback |
| 2012-2014 |
Subaru WRX |
| 2013-2021 |
Subaru WRX STI |
| Attributes |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Country of Origin (Primary) |
CN |
| Dimensions |
28in x 21.8in x 2.5in |
| GTIN |
00748354803488 |
| Harmonized Tariff Code (Schedule B) |
8708915000 |
| Hazardous Material Code |
N |
| Install Difficulty |
3 |
| Life Cycle Status Code |
Available to Order |
| Material |
Aluminum |
| NAFTA Preference Criterion Code |
B |
| SDR Required Flag |
N |
| SellingPoint01 |
Direct fit for the 2008-2014 Subaru WRX/2008-2021 STI |
| SellingPoint02 |
Premium radiator has 3-row (2” thick) core for improved strength and reliability |
| SellingPoint03 |
16% thinner-than-stock tubes allow for more surface contact, increasing cooling efficiency |
| SellingPoint04 |
Greater density of rows for higher cooling capacity |
| SellingPoint05 |
More contact points for additional heat transfer |
| SellingPoint06 |
3-row design creates more air turbulence, maximizing cooling efficiency |
| SellingPoint07 |
Now includes two 1.3 bar high-pressure caps, raising the boiling point of engine coolant to provide a safer, more efficient system |
| SellingPoint08 |
Two-way expansion tank cap and one-way radiator cap ensure proper flow and function of cooling system to avoid overheating |
| SellingPoint09 |
Includes Magnetic Drain Plug to capture any metallic debris/fragments in your cooling system |
| SellingPoint1 |
Direct fit for the 2008-2014 Subaru WRX/STI |
| SellingPoint10 |
Mishimoto Lifetime Warranty |
| SellingPoint11 |
N/A |
| SellingPoint12 |
N/A |
| SellingPoint13 |
N/A |
| SellingPoint14 |
N/A |
| SellingPoint15 |
N/A |
| SellingPoint2 |
Premium radiator has 3-row (2-in thick) core for improved strength and reliability. |
| SellingPoint3 |
16-percent thinner-than-stock tubes allow for more surface contact, increasing cooling efficiency. |
| SellingPoint4 |
Greater density of rows for higher cooling capacity. |
| SellingPoint5 |
More contact points for additional heat transfer. |
| SellingPoint6 |
3-row design creates more air turbulence, maximizing cooling efficiency |
| SellingPoint7 |
Includes magnetic drain plug |
| SellingPoint8 |
Includes a high-pressure 1.3 bar |
| SellingPoint9 |
Mishimoto radiator cap |
| TechSpec Applications |
2008-2014 Subaru WRX--2008-2019 Subaru STI--2009-2013 Subaru Forester XT--2005-2009 Subaru Outback XT--2005-2009 Subaru Legacy GT |
| TechSpec Chassis Codes |
GE--GH |
| TechSpec Core Height (in) |
27.09 |
| TechSpec Core Length (in) |
13.39 |
| TechSpec Core Thickness (in) |
2 |
| TechSpec DPI |
13091/13093 |
| TechSpec Drain Plug Thread Size |
M12 x 1.5 |
| TechSpec Engine Codes |
EJ255--EJ257 |
| TechSpec Fluid Capacity (gal) |
N/A |
| TechSpec Includes |
(1) Mishimoto Radiator--(1) Mishimoto Two-Way Radiator Cap--(1) Mishimoto One-Way Radiator Cap--(2) Overflow Ports--(1) Magnetic Drain Plug--Fan Mounting Hardware--Mishimoto Lifetime Warranty |
| TechSpec Inlet (in) |
1.54 |
| TechSpec Material |
N/A |
| TechSpec Note |
This item is for Manual Transmission vehicles. For automatic applications, please purchase optional Mishimoto Universal Transmission Cooler Kit.--Caution--The provided Mishimoto two-way cap (six-sided design) should replace the stock cap located on the expansion tank. The Mishimoto Performance Aluminum Radiator should utilize the included one-way cap (circular design with non-directional sticker).--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 support@mishimoto.com.--Due to the additional thickness of our 3-row X-Line radiator, trimming the upper hose may be necessary.--Use small fitting for:--2008-2009 Subaru WRX--2008-2019 Subaru STI----Use large fitting for:--2010-2014 Subaru WRX--2005-2009 Subaru Legacy GT--2005-2009 Subaru Outback XT--2009-2013 Subaru Forester XT |
| TechSpec Outlet (in) |
1.54 |
| TechSpec Overall Height (in) |
28 |
| TechSpec Overall Length (in) |
21.8 |
| TechSpec Overall Width (in) |
2.5 |
| TechSpec Overall Width (ins) |
2.5 |
| TechSpec Rows |
3 |
