Hyundai Motor Company 25500-3L300 Thermostat Housing

The Hyundai Kia 25500-3L300 Thermostat Housing is a direct-fit engine cooling component, featuring a cast aluminum housing with an integrated thermostat and a thermostat assembly included per application, designed to regulate coolant flow and keep the engine within its optimal operating temperature under varying driving conditions. It is specified for Hyundai Palisade, Kia Sedona, Kia Cadenza, and Kia Telluride models equipped with 3.3L and 3.8L gasoline engines, and it supports cooling-system servicing, thermostat assembly replacement, preventive maintenance, and restoration of reliable temperature control as part of routine engine maintenance. The part bears the manufacturer part number 25500-3L300, is a new OEM replacement from Hyundai Kia, and is intended for straightforward direct-fit installation on the listed vehicles, ensuring compatibility with the engine cooling system without modification. Common replacements during maintenance include the engine coolant thermostat, the water pump, or the radiator hose assembly, reflecting the thermostat housing’s role in maintaining proper coolant circulation and consistent engine performance.