DPF Kit for Audi A6 – Ernst Diesel Particulate FilterDiesel Particulate Filter Kit for Audi Ernst Improve emissions control and maintain OEM performance with the Diesel Particulate Filter (DPF) Kit for Audi. Designed by Ernst for vehicles originally equipped with soot filters, this Euro 4 certified unit includes an integrated catalytic converter and full mounting kit. Key Features: Integrated Catalyst: Combines particulate filtration with oxidation catalyst for comprehensive emissions control Euro 4