This paper focuses on the Chevrolet Equinox Thermostat Gasket that is an essential item that demonstrates reliability and performance of Chevrolet Equinox's cooling system. Located to form a protective cover around the thermostat, this Thermostat Gasket helps stop leakage of coolant, thus maintaining the suitable engine temperature and avoiding excessive heat. Its importance cannot be underestimated because a busted gasket will cause leakage of the coolant and in the process negating all the efforts placed in getting a new thermostat. The Thermostat Gasket is required to keep up the efficiency and safety of the Chevrolet Equinox car across the three generations of the car model, compatible with different models of Equinox. However, being a very simple product to install means that it is suited for persons who can work on their vehicles, making it even more appealing. However, the Chevrolet Equinox Thermostat Gasket can be listed among the prime automotive thermostats due to its sturdiness and capability to endure high temperatures and pressure for operational continuity. This reliability is very important to the drivers who rely on their Chevrolet Equinox for both the short and long trips in their day to day activities. As Chevrolet Equinox is one of the widely-used cars in the United States, the part also known as the Thermostat Gasket performs a valuable function of stabilizing the condition of the cooling system, which, in turn, is crucial for the improvement of the car's performance and its overall service life. Conclusively, the use of the Chevrolet Equinox Thermostat Gasket is crucial to the stability and performance of the automobile; thus, it supports the general Chevrolet Equinox model's reliability.