The performance of your engine greatly depends on the operation and functionality of the cooling system for your Buick. Due to the fuel compression and combustion processes that have to be undertaken to convert the fuel into something that could power up the vehicle and put it into motion, heat build up in the engine compartment is inevitable. But only up to a certain increase in temperature can the engine components continue their operation, because when the engine becomes too hot, it can no longer provide the kind of performance you expect of it. This is the reason why vehicle manufacturers also invest in conceptualizing advances in cooling system technologies. The objective of the Buick cooling system is to lower down the very high temperature of the engine compartment to establish an environment suitable for the efficient work of all the engine components. Considered as the heart of the cooling system for your Buick is the radiator. It is the one responsible for circulating water based coolants and fresh cool air that has just entered the engine compartment through the niches in the grille. The radiator fan circulates the air and needs a fan blade, a fan clutch, fan motor and fan shroud for it to be able to perform its task. The Buick fan clutch is the one that checks if the rotational motion of the fan blades is of the ample speed. The motion of the fan should be fast when the temperature rises and should slow down when the engine is starting to cool. A defect in the fan clutch could inappropriately speed up or slow down the movement of the radiator fan which could in turn affect the overall performance of the ignition system, and subsequently, the entire engine system. In this case, you better start finding the best substitute for your malfunctioning fan clutch. If you have no idea where to start looking, try viewing our website and order quality Buick fan clutches from there.