Mishimoto Subaru WRX Performance Aluminum Radiator, 2015-2021 - MMRAD-WRX-15PRODUCT FEATURES Direct fit for 2015+ Subaru WRX Reduces coolant temperatures by 20+F (11+C) 117% increase in coolant capacity 42% increase in coolant surface area (tubes) 34% increase in air surface area (fins) 15% more efficient than stock 100% brazed aluminum core TIG welded to perfection Included High Pressure 1. 3 Bar Radiator Cap raises the boiling point of engine coolant to provide a safer and more efficient system Includes Magnetic Drain Plug