6.4L Twin Turbo Diesel Thermostat OEM NEW 08-10 Ford F250 F350 Super Duty 6.4 Turbo Diesel Engine Thermostats & Gasket OEM Ford Motorcraft, 6.4L Diesel Turbo Powerstroke Engine Thermostats & Gasket Kit F250 F350 F450 F550 Super Duty 8C3Z8575D Motorcraft