• Helps engine maintain normal operating temperature


• Controls flow of coolant from radiator to engine


• Replace quickly when malfunctioning

Your INFINITI relies on coolant to help the engine stay cool and at the right operating temperature. Many components help coolant complete its job, and the coolant thermostat is one of the most important ones. When the thermostat stops functioning properly, it must be replaced right away. This INFINITI Engine Coolant Thermostat Kit has what you need to successfully replace the thermostat.

The coolant thermostat is usually located between the radiator and engine. It acts as a gate and blocks or allows the flow of coolant between the two parts. Thermostats have a preset temperature that dictates when they open. As things warm up, your INFINITI coolant thermostat opens, letting the coolant circulate through your engine. When your engine is back at its normal operating temperature, the coolant returns to the radiator, where it cools down before making its way to the engine again. It's important that your coolant thermostat opens and closes at the right times 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 probably notice when it starts failing. When 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 you notice any of these symptoms, take your INFINITI in to get checked out immediately.

A failing coolant thermostat can cause long-term engine damage, so it's vital you swap it out ASAP. With an Engine Coolant Thermostat Kit made to fit your INFINITI and the right tools, replacing the thermostat at home can be relatively simple. Don't forget your engine cools all the way 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 the pros and bring your INFINITI to the nearest service center.

Your cooling system needs a working coolant thermostat. When it's time to replace it, you want a Engine Coolant Thermostat Kit that fits. Shop genuine OEM parts to find a quality Engine Coolant Thermostat Kit custom-made for your INFINITI.

The Engine Coolant Thermostat Kit, part 21200JK20A, is suitable for INFINITI EX35 2008-2009, INFINITI FX35 2009-2011, INFINITI G35 2007-2008, INFINITI M35 2009-2010, or INFINITI M45 2009-2010. View the What This Fits tab for more information.

Fits EX35, FX35, G25, G35, M35, M45