What component is often replaced alongside the thermostat?

Replacing the thermostat often goes hand in hand with the replacement of the water pump. This is because both components are integral parts of the engine's cooling system. When a thermostat fails or is replaced due to overheating or lack of proper function, it is a common practice to inspect the water pump, especially if the vehicle has high mileage or if there are signs of coolant leaks.

The water pump circulates coolant through the engine and radiator, and a failing water pump can lead to overheating issues similar to those caused by a malfunctioning thermostat. Since these components work closely together, replacing them at the same time is a wise maintenance strategy that helps ensure the entire cooling system operates efficiently.

While the other components mentioned, such as the intake manifold gasket, radiator cap, and timing belt, may be replaced for various reasons during engine work, they do not typically require replacement alongside a thermostat under normal circumstances. Each of those components deals with different functions, such as sealing the intake manifold, maintaining pressure in the cooling system, or controlling engine timing, respectively.