The Liqui Moly Maintenance Service Kit - 137042 is a comprehensive kit designed for performing routine maintenance on a car. It includes a variety of products that help keep a car running smoothly and efficiently. The kit includes an oil filter, air filter, fuel filter, spark plugs, engine oil, brake fluid, and coolant. These products are essential for maintaining the overall health of a car's engine and ensuring it operates at its best. The oil filter helps to remove impurities from the engine oil, while the air filter prevents dust and debris from entering the engine. The fuel filter helps to keep the fuel system clean and free from contaminants. The spark plugs are responsible for igniting the fuel-air mixture in the engine, while the engine oil lubricates and protects the engine components. The brake fluid is crucial for safe braking, and the coolant helps to regulate the temperature of the engine. Overall, the Liqui Moly Maintenance Service Kit - 137042 is a convenient and cost-effective solution for keeping a car in top condition.