NISSEN Oil Cooler 91197-NIS

An oil cooler in a car is an essential component that helps to regulate the temperature of the engine oil. It is designed to dissipate heat and prevent the oil from overheating during prolonged use or under extreme conditions. By doing so, it helps to maintain the optimal operating temperature of the engine, which is crucial for its efficient performance and longevity.

The oil cooler works by passing the engine oil through a series of small tubes or fins, which are exposed to the flow of air (either from the outside or the car's cooling system). As the oil flows through these tubes, the excess heat is transferred to the surrounding air, effectively reducing the temperature of the oil. This cooled oil is then recirculated back to the engine, ensuring that it stays within the desired range of temperature. Overall, the oil cooler plays a vital role in preventing oil breakdown, reducing wear and tear on engine parts, and improving overall engine efficiency.