Package Included: 1 x Thermostat Housing Assembly How to find thermostat: You can find your car's thermostat by starting at the upper radiator hose and following it to where it enters the top of the engine. Brand new and never used, directly replaces the old one and easy installation. Thermostat Housings for Engine Cooling & Climate Control | Kenya X AUTOHAUX Engine Coolant Thermostat Housing Assembly 255002E085 for Hyundai Elantra 2017-2020 in Thermostat Housings 2018-2021 for Hyundai Kona SE, SEL 2., 0L L4 - Gas 2019-2021 for Hyundai Veloster Base 2., 0L L4 - Gas 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. Good performance, directly replaces the old or broken one. Fitment: for Hyundai Elantra 2017-2020 , OE Number: 255002E085 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 engine's thermostat regulates the temperature of the engine by controlling coolant flow. Engine Coolant Housing For Hyundai X AUTOHAUX Engine Coolant Thermostat Housing Assembly 255002E085 For Hyundai Elantra 2017-2020 Thermostat Housing Hyundai