Fitment Information Subaru STI (2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019) Subaru WRX (2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019) Subaru Legacy GT (2005, 2006, 2007, 2008, 2009)  Subaru Outback XT (2005, 2006, 2007, 2008, 2009) Manual Transmission only.  Specs & Features All Aluminum Radiator Product Description Hyper V-Core Series Aluminum Racing Radiator by Koyorad®. The Hyper V-Core series is the newest to the Koyorad all-aluminum racing radiator line up. An engine's cooling system in many newer vehicles is suffering due to limited space and crowding which affects air circulation. Their new ultra-efficient Hyper V-Core was developed specifically for vehicles that see extreme heat, are limited in space, and where the factory inlet/outlet locations. The Hyper V-Core series radiators have a specially designed fin and tube pitch which significantly increases its surface area while still allowing for excellent air circulation through the radiator. The Hyper V-Core series is the perfect solution where space savings and high performance is a must. Unless noted otherwise, all Koyorad Hyper V-Core series all-aluminum radiators are Nocolok™ brazed, designed as a factory fit, direct bolt in with no engine modifications necessary, and retain mounts for the stock fan shrouds and fans.Koyorad quality is a direct result of their privately owned factories which allow Koyorad Japan to oversee each stage of radiator production. This ensures that quality is never sacrificed for quantity. Each Koyorad all aluminum radiator core is hand assembled, Nocolok™ brazed, then TIG welded by hand with the finest aluminum available. These are just a few characteristics that have earned Koyorad Radiators their excellent reputation in performance radiators worldwide.  Koyo Radiators Features: High-density fully brazed Hyper-V Series 1.4" cross-flow core Optimized locations for inlet, outlet, and fan temp switch Brushed aluminum finish Two Row construction Precision TIG welded Nocolok™ Brazing Billet aluminum filler neck and drain plug Triple Pressure tested