Engine Coolant Thermostat Housing Assembly for Altima Sentra Rogue About this item Brand new and never used, directly replaces the old one and easy installation. Fitment: for Nissan Sentra 2001-2012, for Nissan Altima 2002-2018, for Nissan Frontier 2005-2019, for Nissan Rogue 2008-2019, for Nissan Pathfinder 2014, for Nissan Murano 2016-2017 OE Number: 21200-EA00. Good Replacement: The engine's 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 fine 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. Package Included: 1 x Thermostat Housing Assembly.