The Liqui Moly Diesel Particulate Filter (DPF) Cleaning Kit - 451764 is a comprehensive kit designed to clean and maintain the diesel particulate filter in a car. The kit includes four essential products to effectively remove soot, ash, and other contaminants from the DPF, ensuring optimal performance and longevity of the filter. The contents of the kit include a DPF cleaner, a DPF protector, an intake system cleaner, and a fuel system cleaner. These products work together to thoroughly clean and protect the DPF, as well as the entire fuel and intake systems of the car. This kit is suitable for all types of diesel engines and can help improve fuel efficiency, reduce emissions, and prevent costly repairs.