Diesel DPF Cleaning is a Cummins-approved cleaning center and a licensee of Clean Diesel Specialists (CDS). Every licensee in the CDS network is Cummins-approved and uses certified cleaning equipment. We clean diesel particulate filters (DPFs) and diesel oxidation catalysts (DOCs) from Cummins engines at our cleaning plant in South Bend, Indiana.
Cummins Engines We Clean For
We clean DPFs and DOCs from Cummins engines in heavy-duty trucks, medium-duty trucks, pickups and equipment, including:
- X15 and X12
- ISX
- B6.7 and ISB, including the 6.7L Cummins
- L9, ISL and ISC
Call with your engine model and filter part number if you don't see yours.
When a Cummins DPF Needs Cleaning
Watch for the Maintenance Lamp
Newer Cummins engines track ash buildup for you. According to Cummins, X15 engines include an ash load monitor, and when cleaning is due, the check engine lamp or amber warning lamp flashes for 30 seconds after the key is turned on. The DPF maintenance fault is fault code 5383.
Typical Ash Maintenance Intervals
Cummins sets ash maintenance intervals by duty cycle. For example, Cummins lists these intervals for the 2024 X15:
| Duty cycle | Fuel mileage | DPF ash maintenance |
|---|---|---|
| Severe | Under 5.5 mpg | 250,000–400,000 miles |
| Normal | 5.5–6.5 mpg | 400,000–600,000 miles |
| Light | Over 6.5 mpg | 600,000–800,000 miles |
Smaller engines are often due sooner. Cummins lists DPF cleaning for the 2024 L9 at 200,000 miles or 6,500 hours. Check your engine's maintenance guide for its exact interval.
Other Warning Signs
A Cummins DPF can also show it's loaded before the interval: frequent regens, regens that don't finish, lost power, lower fuel mileage or restriction codes. See signs your DPF needs cleaning.
Our Cleaning Process
Our process is Cummins-approved because we follow the Clean Diesel Specialists 8-step procedure on Cummins-approved aqueous cleaning equipment from EnviroMotive. The steps:
- Initial inspection: We check the filter for external damage, contamination and wear.
- Record and document: We record the filter's airflow, weight and condition as a baseline.
- Blast cleaning: Compressed air knocks loose the larger soot and ash particles.
- Aqueous cleaning: A high-pressure water flush reaches deep into the filter to remove fine particles that air alone can miss.
- Drying: All moisture is removed before heat treatment.
- Thermal regeneration: The filter is heat-treated at controlled temperatures to burn off any remaining fine particulates.
- Cooling and final check: After cooling, we run a final airflow test and structural check.
- Package and document: The filter is sealed, labeled and returned with documentation of the cleaning results.
See our full cleaning process.
After the Cleaning
We clean filters only and don't remove or install them, so your mechanic or repair shop handles both. When the cleaned filter goes back on:
- Use new gaskets and clamps. They aren't included with cleaning, but we sell them.
- Have the DPF ash and soot load values reset with a Cummins-compatible service tool, so the engine knows the filter is clean.
- Fix any problem that was loading the filter early, like injector, turbo or EGR issues or high oil consumption.
Pricing and Turnaround
- Cummins DPF cleaning: $300, with 24-hour turnaround
- DOC cleaning: $80 when cleaned with your DPF, or $300 on its own
- EGR cooler cleaning: $300, with 48-hour turnaround
- Save $25 per item when you drop off and pick up at our cleaning plant
See how much DPF cleaning costs for more detail.
Getting Your Cummins DPF to Us
- Drop off and pick up at our cleaning plant: 215 Ullery St, Unit 2, South Bend, IN 46637.
- Free pickup and delivery for DPF cleaning within 90 miles of our cleaning plant, across northern Indiana and southwest Michigan. See our pickup area.
- Ship it in: call first and we'll help you get it here.
Need a Replacement Cummins DPF?
If your Cummins DPF is cracked, melted or contaminated, we sell aftermarket DPFs and DOCs for Cummins X15, X12, ISX, B6.7, ISB, L9 and ISC applications, plus Cummins NOx sensors. Our DPFs include free clamps and gaskets.
Frequently Asked Questions
Are you Cummins-approved?
Yes. Diesel DPF Cleaning is a Cummins-approved cleaning center and a Clean Diesel Specialists licensee.
What does Cummins fault code 5383 mean?
It's the DPF maintenance fault, which tells you the filter is due for ash maintenance.
How long does Cummins DPF cleaning take?
24 hours once the filter arrives at our cleaning plant.
Do you remove and install Cummins DPFs?
No. We clean filters only. Your mechanic or repair shop handles removal and reinstallation.
Do you clean 6.7 Cummins DPFs?
Yes. We clean DPFs from B6.7 and ISB engines, including the 6.7L Cummins.
Schedule Your Cummins DPF Cleaning
Call 574-213-8691 or email dieseldpfcleaning@gmail.com, Monday–Friday, 10 a.m.–5 p.m. Eastern. Have your Cummins engine model, filter part number and any fault codes ready.