The majority of modern vehicles depend on a fluid called coolant to remain at optimal temperature. Coolant circulates heat away from the motor and pushes it out of the vehicle. The Engine Coolant Thermostat regulates coolant flow between the engine, where heat begins, and the radiator, where said heat dispels.
The Engine Coolant Thermostat in your Nissan is a petite but powerful device that opens and shuts depending on engine temperature. When you first turn your Nissan on, the thermostat will remain closed, preventing the flow of coolant until it senses that the engine has reached the ideal operating temperature. Once your engine is sufficiently warm, the Engine Coolant Thermostat “unlocks,” allowing antifreeze to circulate, thereby preventing your vehicle from overheating.
By supporting your vehicle's optimum operating temperature, the thermostat helps prevent engine wear and cut down on unnecessary emissions. In contrast to engine oil and brake pads, Engine Coolant Thermostats don't need to be replaced regularly. Instead, these thermostats only require replacement if and when they malfunction.
Some signs that your thermostat is not working the way it should include: engine running too hot, the engine not coming to temperature, subpar cabin heater performance, or an illuminated dashboard light, in specific Nissan models and years. Additionally, in certain instances, an old Engine Coolant Thermostat may cause drastic changes in coolant levels or faster-than-usual coolant or antifreeze deterioration.
Since the signs of a faulty Engine Coolant Thermostat parallel other signs of cooling system issues, we suggest getting your Nissan inspected at an authorized service center. But, if you're confident that the Engine Coolant Thermostat is the issue, replacing it with a reliable Nissan Engine Coolant Thermostat may help get your engine back in its comfort zone.
Typically, installing a new Engine Coolant Thermostat is a repair best left to a certified expert. But if you're an excellent DIY mechanic, you might be able to take care of it on your own. Before starting, ensure you have the necessary components and tools: a replacement Engine Coolant Thermostat, a new gasket or sealing compound, a wire brush, bucket, protective gloves, and a socket wrench.
Whether you decide to DIY your Nissan Engine Coolant Thermostat replacement or get repairs from your nearby Nissan experts, double-check the owner's manual before doing any work on your vehicle. Also, ensure proper fitment and excellent performance by purchasing a genuine replacement Engine Coolant Thermostat and more components made by Nissan for your Nissan model and year.
This Cooling System Engine Coolant Thermostat, part 21200V720A, fits the following vehicle models and years: Nissan Frontier 1999-2004, Nissan Maxima 1989-1994, Nissan Pathfinder 1996-2002, Nissan Quest 1993-2002, or Nissan Xterra 2000-2004. Click on the What This Fits tab for more fitment information.
THERMOSTAT ASSY