- Supports your engine's optimum operating temperature
- Helps regulate the flow of coolant between engine and radiator
- Replace when malfunctioning
Many modern cars, trucks, and SUVs rely on a fluid known as coolant or antifreeze to keep your motor running at an optimal temperature. Coolant moves heat away from the motor and outside of the car. The Engine Coolant Thermostat helps regulate the flow of coolant between the engine, where heat forms, and the radiator, where said heat dispels.
The Engine Coolant Thermostat in your Nissan is a small but mighty device that opens and closes according to changes in engine temperature. When you crank your Nissan to life, the Engine Coolant Thermostat remains shut, containing coolant flow until the engine heats up to optimal operating temps. Once your engine is warmed up, the thermostat opens, allowing coolant to circulate, effectively preventing the engine from overheating.
By supporting your vehicle's optimal temperature, a working Engine Coolant Thermostat helps prevent engine damage and cut down on unnecessary emissions. Unlike engine oil and brake pads, coolant thermostats don't need regular replacements. Rather, these thermostats only require replacement if they quit performing as they should.
Some signs that your Nissan's Engine Coolant Thermostat has seen better days include: engine running too hot, engine running cool, a malfunctioning cabin air heater, or an illuminated dashboard light, in certain Nissan models. In addition, in some cases, an Engine Coolant Thermostat that needs replacing may lead to erratic changes in engine coolant levels or premature antifreeze contamination.
Since the signs of a faulty Engine Coolant Thermostat parallel symptoms of separate issues with the cooling system, we recommend getting an inspection at your nearest authorized service center. However, if you're certain that a faulty Engine Coolant Thermostat is to blame, replacing it with a high-quality OEM Engine Coolant Thermostat might help get your engine back in its comfort zone.
Typically, replacing a faulty Engine Coolant Thermostat is a repair best left to a certified expert. But if you're an excellent DIY mechanic, you may be able to do it at home. Before starting, ensure you have the necessary components and tools: an authentic Nissan Engine Coolant Thermostat replacement, a sealing compound or gasket, a wire brush, bucket, protective gloves, and a socket wrench.
Whether you decide to replace your Engine Coolant Thermostat at home or get repairs from your nearby Nissan experts, ensure that you always look to the owner's manual as the source of truth for all things related to your vehicle. Also, ensure proper fitment and excellent performance by ordering a genuine replacement Engine Coolant Thermostat and other Cooling System components made by Nissan for your Nissan model and year.
This Engine Coolant Thermostat 2120042L0A is engineered for Nissan 300ZX, Nissan Frontier, Nissan Hardbody Pick Up, Nissan Maxima, or Nissan Xterra. Click on the What This Fits tab for more details.
THERMOSTAT ASSY