The Mishimoto 2015-2021 Subaru WRX Performance Aluminum Radiator is designed and engineered to reduce coolant temperatures by +20 Degrees Fahrenheit (+11 Degrees Celsius ), maximize cooling efficiency by up to 15-percent, and most importantly to 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 2015+ Subaru WRX radiator features a lightweight dual core, 100-percent brazed aluminum, and polished end tanks, enhancing the overall performance of your engine. The engineers at Mishimoto designed this radiator with a 117-percent increase in coolant capacity, 42-percent increase in coolant surface area, and 34-percent increase in air surface area, making it an ideal upgrade to keep your new FA20-DIT running cool! Every Mishimoto aluminum radiator is a direct stock fit making installation effortless with no cutting or modification required. All Mishimoto radiators come with a Mishimoto 1.3 Bar High-Pressure Radiator Cap and the Mishimoto Lifetime Warranty, including accident protection.