The Koyorad Aluminum Radiator model KH011937 is a 1" Hyper Core Series Aluminum Racing Radiator designed for high performance and durability. It's an all-aluminum, TIG-welded radiator that serves as a direct replacement for aged plastic tank factory radiators. This upgrade is expected to enhance performance and longevity, providing an increase in the vehicle's heat capacity and endurance.Key features of this radiator include:All-aluminum construction with a brushed aluminum finish.Fully brazed 1" thick Hyper Core with high-efficiency louvered fins.Nocolok? Brazing and precision TIG welding.CNC machined aluminum filler neck and drain plug.Compatibility with OEM fan shroud, allowing for plug-and-play installation using factory fans.Designed to accept OEM radiator hoses and AC condenser without modifications.Triple pressure tested to ensure quality.The Koyorad KH011937 is particularly designed for Lexus IS250 with 2.5L V6 and Lexus IS350 with 3.5L V6 models from 2006 to 2013, fitting both automatic and manual transmissions. The high-density Hyper core is 1" thick, offering over a 50% increase in thickness compared to the OEM radiator, which significantly improves cooling efficiency.