Mishimoto MMTS-GEN6-10 62 Degrees Racing Thermostat for Hyundai Genesis Couple V6 Fits the 20102014 Hyundai Genesis Coupe 3.8 Lower activation temp allows coolant to flow through the engine earlier Maintains lower temperatures and extends engine life Mishimoto Activation: 154.4F (68C) / Note: 6 Cylinder Applications Only Mishimoto Lifetime Warranty It activates at 62 degree celsius It will lower high engine temperature produced by modified and upgraded turbo applications Opens up at a lower temperature (60C) Provide greater cooling efficiency Limited lifetime warranty