Mishimoto MMTS-F2D-96L Silver Low-Temperature Thermostat Direct fit for 19962003 Ford 7.3L Powerstroke Lower activation temp allows coolant to flow through the engine earlier Ideal for vehicles in warm climates or under extreme towing/driving conditions Mishimoto Activation: 189F/196F (87C/91C) / OEM Activation: 194F/201F (90C/94C) Mishimoto Lifetime Warranty