Chicagoland's Source for Truck Parts: With two locations in the Chicago area, Action Truck Parts covers all of your truck parts and accessory needs. DPF Cleaning Services: The DPF cleaning process removes up to 95% of the diesel particulate. Cleaning your DPF extends the life of the unit, reduces downtime and significantly improves fuel economy. All final test results are compared to OEM specifications and reported to you. DPF Retrofit Programs and consultation available.