Feature●Brand new and never used, directly replaces the old one and easy installation.●Fitment: for Hyundai Elantra 2017-2020●OE Number: 255002E085●Good Replacement: The engines thermostat regulates the temperature of the engine by controlling coolant flow. A bad or failing thermostat: high temperature reading and engine overheating, low temperature reading and underheated engine, temperature changing erratically, coolant leaks around thermostat housing or under the vehicle. How to find thermostat: You can find your cars thermostat by starting at the upper radiator hose and following it to where it enters the top of the engine.●Package Included: 1 x Thermostat Housing AssemblyDescription