A DPF (Diesel Particulate Filter) aftermarket emissions exhaust system is designed to reduce harmful emissions from diesel engines. The system works by trapping and filtering out particulate matter (soot) from the exhaust gases produced by the engine. This reduces the amount of black smoke emitted by the vehicle and helps to improve air quality.

DPF aftermarket emissions exhaust systems are typically made up of a filter unit and a regeneration module. The filter unit contains the DPF filter and is designed to be installed in the existing exhaust system of the vehicle. The regeneration module monitors the DPF and initiates a cleaning process when necessary to remove any trapped soot.

These aftermarket emissions systems are becoming increasingly popular, especially in regions with strict emissions regulations. They are also often used by owners of older diesel vehicles to improve their emissions performance and comply with regulations.