Mishimoto MMTS-F2D-96H Ford 7.3L Powerstroke High-Temperature Thermostat, 96-03 Direct fit for 19962003 Ford 7.3L Powerstroke Higher activation temp restricts coolant flow for quicker engine warm-up Ideal for use in cold climates Mishimoto Activation: 205F (96C) / OEM Activation: 195F (90.5C) Mishimoto Lifetime Warranty