• Helps engine maintain normal operating temperature


• Controls flow of coolant from radiator to engine


• Replace quickly when malfunctioning

Your car depends on coolant to help the engine stay cool and at the correct operating temperature. Many components help coolant do its job, and one of the most critical ones is the coolant thermostat. When the thermostat stops functioning correctly, it must be replaced straight away. This INFINITI Engine Coolant Thermostat Kit has what you need to successfully replace the thermostat.

You can usually find the coolant thermostat between the engine and radiator. It acts as a gate and controls the flow of coolant between the two parts. Thermostats have a preset temperature that determines when they open. As things warm up, your INFINITI coolant thermostat will open, letting the coolant move through your engine. When your engine gets to its regular operating temperature, the coolant returns to the radiator, where it cools down before making its way to the engine again. It's important that the coolant thermostat opens and closes at the right moment so your engine can stay at the optimal temperature.

Your coolant thermostat is a critical part of your INFINITI's cooling system, and you’ll likely notice when it begins to fail. If a thermostat malfunctions, it generally means it's stuck open or closed. Symptoms of a bad coolant thermostat include an overheating engine, erratic temperature changes, and coolant leaks. If your vehicle is showing any of these signs, have your INFINITI checked out immediately.

A bad coolant thermostat can lead to long-term engine damage, so it's crucial you replace it as quickly as possible. With an Engine Coolant Thermostat Kit made to fit your INFINITI and the correct tools, replacing the thermostat at home can be relatively easy. Be sure to give your engine time to cool down completely before starting the project. If you don't feel comfortable removing the thermostat and installing your replacement Engine Coolant Thermostat Kit, you can leave it to trained technicians and bring your INFINITI to a service center.

Your cooling system needs a working coolant thermostat. When it’s time for a replacement, you need to order a Engine Coolant Thermostat Kit that fits. Shop Genuine INFINITI Parts to find a quality Engine Coolant Thermostat Kit custom-made for your model and year.

he Engine Coolant Thermostat Kit, part 212008J10B, is compatible with INFINITI I35 2002-2004. See the What This Fits tab for more info.