The key components of an F6 engines cooling system typically include a radiator, water pump, thermostat, coolant passages within the engine block and cylinder heads, hoses, and a fan. These components work together to dissipate heat from the engine. The water pump circulates coolant through the engine and radiator; the thermostat regulates coolant flow based on temperature; the radiator cools the heated fluid with help from airflow facilitated by the fan; and hoses transport the coolant throughout the system.