Dinex aftermarket DPF for Cummins engines meet or exceed OEM specifications and is a direct replacement for OEM part numbers 2888231, 2888231NX, and 2888231RX. Dinex Emissions specializes in the design, development, and manufacture of a complete line of Cummins aftermarket diesel particulate filter (DPF) and related emissions critical components. Dinex DPF and DOC Coatings are based on a high thermal stability was coat formulation with excellent NO2 recycling characteristics.