Mishimoto MMTS-WRA-03L Jeep Wrangler 2.4L/3.8L Racing Thermostat, 2003-2011 Fits the 20032011 Jeep Wrangler 2.4L/3.8L Lower activation temp allows coolant to flow through the engine earlier Maintains lower temperatures and extends engine life Mishimoto Activation: 180F (82C) / OEM Activation: 195F (90.5C) Mishimoto Lifetime Warranty