Diesel Particulate Filter Servicing
For All Years, Makes and Models




Why Choose DPF Express?
The oldest, continuingly operated, DPF cleaning and maintenance facility in the state of Colorado
The largest inventory of DPF, DOC and SCR cores in Colorado with over 4,000 part numbers
The only authorized RecoreTM facility in the State of Colorado
Locally owned and operated
Our Services. DPF Cleaning Isn’t All That We Do

DPF Cleaning
We use state of the art aqueous cleaning that allows us to return your DPF to OEM specifications. The first part of this process is blowing out the unit by hand with an air knife. Then our new Aqueous Flush Machine purges all of the contaminates from the substrate. The filter is then placed in a kiln overnight to dry the substrate, returning it to like-new condition.
Why is keeping a clean DPF important? It’s critical for improved engine performance and fuel efficiency: A clogged DPF can restrict exhaust flow and cause back pressure in the engine. This can lead to decreased engine performance and increased fuel consumption. Cleaning your DPF can restore proper exhaust flow and improve engine performance and fuel efficiency.
DOC Cleaning
The Diesel Oxidation Catalyst (DOC) is a flow-through substrate that like any catalyst, creates the heat needed to regen the system. It is important to service the DOC to remove any contaminates that would eventually end up in the DPF filter.
Does the DOC Always Need Cleaning at the Same Time as the DPF? It is recommended, not required, to service the DOC at the same time as the DPF. We recommend that the DOC be removed so it can be inspected and cleaned too. When not serviced simultaneously, the DOC can send soot back into a newly cleaned DPF.
SCR System Cleaning
The Selective Catalyst Reduction (SCR) System can cause unexpected problems. We only recommend servicing SCR units if you have had a doser valve issue, or a cracked or melted DPF that would allow soot particles to mix with the DEF fluid.
EGR Cleaning
Having a stuck or clogged Exhaust Gas Recirculation (EGR) valve and cooler can shut down any diesel engine. Our cleaning process removes all baked on soot and contaminants from the EGR valve and cooler at a much lower cost than replacing the unit. Once the EGR is cleaned, we pressure test it to make sure there aren’t leaks that would allow coolant into the intake system. This is important because any leaks would cause further DPF related issues.

Colorado’s Only RECORE Center
We are proud to be Colorado’s only RECORE center. With RECORE, we can replace the cracked or melted substrate in most DPFs, DOCs and SCRs. Let us RECORE it for a fraction of what a new OEM or aftermarket filter costs. RECORE also offers the most advanced technology in DOC and CNG catalyst technology. All RECORE substrates are made from high quality stainless steel which allows for better flow, more surface area and quality that is longer lasting.
Same day turnaround.
While we RECORE a lot of over-the-road and light-duty filters, we can also RECORE off-road units.
Contact DPF Express
Open Monday-Friday 8:30am-5pm.
Closed Saturdays and Sundays
4694 Glencoe St
Denver, CO 80216