Mishimoto X-Line Performance Aluminum Radiator-Subaru Impreza WRX & Sti 2008-2018

Specifications   Part Details: The Mishimoto Performance Aluminum Triple-Core Radiator is designed to provide increased cooling capacity for the Subaru Impreza STI by significantly improving heat dissipation compared to the factory radiator. The triple-core design increases coolant volume and thermal efficiency, helping maintain stable engine temperatures under higher heat loads. Constructed from durable aluminum and engineered with a high-efficiency triple-core cooling core, this radiator is built for applications where additional cooling headroom is required. It installs as a direct-fit replacement using factory mounting points and remains compatible with stock fans and shrouds. Performance & Cooling Capacity The triple-core design offers greater surface area and improved coolant flow compared to standard radiators. This allows heat to be removed more effectively from the cooling system, helping reduce temperature fluctuations during aggressive driving, warm climates, or sustained engine load. Improved cooling consistency supports engine reliability and makes this radiator a strong option for performance-focused builds or vehicles that regularly operate under demanding conditions. Design & Fitment Designed as a direct OEM-style replacement, this radiator matches factory dimensions and mounting locations for proper alignment and secure installation. The aluminum construction also provides increased durability over aging factory radiators, making it suitable for long-term use in higher-heat environments. Application & Compatibility Subaru Impreza STI (2008–2014) Key Features Triple-core aluminum radiator construction Increased cooling capacity compared to OEM radiator Direct-fit replacement using factory mounting points Compatible with stock fans and shrouds Designed for stable cooling under higher thermal loads 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. Recommended Supporting Cooling Components Fans & Shrouds – help improve airflow through the radiator, especially during low-speed and stop-and-go driving. Cooling Hoses – ensure reliable coolant flow and are commonly replaced when upgrading radiators. Coolant Routing – supports efficient coolant circulation throughout the cooling system. Oil Coolers – complement radiator upgrades by helping manage oil temperatures under sustained load. Learn more about Mishimoto cooling solutions and performance-focused radiator upgrades. Shipping   Shipping Options: WrenchMastersAuto.com ships your performance parts safely, quickly and conveniently nationwide via the most trusted shipping carriers such as: UPS, Fed Ex, USPS, and DHL.          Delivery Times: In Stock: 3-7 Business Days Custom Orders: 2-6 Weeks, Please Email: [email protected] or Call: 727-565-9808 for Questions. Enjoy FREE SHIPPING on most orders over $199! Contact WrenchMasters   Have Questions? Need Assistance? 727-565-9808 Our expert team members are available Mon-Friday 8:00 AM to 5:30 PM EST to provide support and answer any questions or concerns before or after your parts purchase. Part Installation Want your performance parts professionally installed? Save time, stress & hassle by scheduling your auto appointment online below. Our team of ASE certified master techs will make sure your parts are installed properly at our St.Petersburg, Florida shop location. Schedule Install Now Performance Parts Locator Looking for a specific part not listed on our online store? WrenchMastersAuto.com has access to over 40,000 aftermarket performance parts for vehicles of all makes and models, old and new.  Fill out the parts request form below, and our parts specialist will contact you within 24-48 hours.