The Vaico Breather System Kit - 138155 is a comprehensive kit designed to improve the performance and functionality of a car's breather system. This kit includes four essential components that work together to ensure proper ventilation and circulation within the engine.

The first component is a breather hose, which is responsible for carrying air and vapors from the crankcase to the air intake system. This helps to prevent pressure buildup and potential damage to the engine.

The second component is a breather valve, which regulates the flow of air and vapors through the breather hose. This valve ensures that the correct amount of air is entering the system, maintaining proper pressure levels.

The third component is a breather filter, which is responsible for removing any contaminants or impurities from the air and vapors before they enter the engine. This helps to protect the engine from potential damage and maintain its efficiency.

The final component is a breather cap, which seals the breather system and prevents any dirt or debris from entering. This cap also helps to maintain the pressure levels within the system.

Overall, the Vaico Breather System Kit - 138155 is a necessary kit for maintaining the health and performance of a car's breather system. It includes all the essential components needed to ensure proper ventilation and circulation within the engine, ultimately extending the life of the vehicle.