The Liqui Moly Oil Change Kit 5W-40 - 137439 is a comprehensive kit designed to provide all the necessary products for an oil change in a car. It includes four different items, each serving a specific purpose in the oil change process. The first item is a high-quality 5W-40 oil, specifically formulated to provide optimal lubrication and protection for car engines. The second item is an oil filter, designed to remove impurities and contaminants from the oil. The third item is an oil drain plug, which is used to safely drain the old oil from the car's engine. Lastly, the kit includes an oil filter wrench, which is a specialized tool used to remove and replace the oil filter. This kit is suitable for a variety of car models and is a convenient and cost-effective solution for regular oil changes.