<p> The thermostat housing assembly included Gasket,O-ring,Thermostat,Connector Housing,Thermostat Housing,each thermostat housing assembly is tested to perform as well as the original units. <br> The thermostat automatically adjusts the amount of water entering the radiator according to the cooling water temperature to ensure that the engine operates within the appropriate temperature range,effective protection of the engine. <br> Replacement OEM ( Original Equipment Part) Number:2L2Z8592AA, 2L2Z8592BA, 2L2Z8592BB, 6L2Z8592FA, 4L5Z8592AA, RG614, RH165, RH167, RH147,Perfect Match for the Original Car. <br> Fits the Following Vehicles: for for 2002-2010 Ford Explorer V6 4.0L for 2002-2003 Ford Explorer Sport V6 4.0L for 2007-2010 Ford Explorer Sport Trac V6 4.0L for 2002-2010 Mercury Mountaineer V6 4.0L. <br><br></p>