A diesel particulate filter (DPF) is a filter that captures and stores exhaust soot (some refer to them as soot traps) in order to reduce emissions from diesel cars. But because they only have a finite capacity, this trapped soot periodically has to be emptied or ‘burned off’ to regenerate the DPF.

If the DPF is becoming clogged with soot or a fault develops in the system, an orange light will typically appear on the dashboard.

Is the light on your dashboard on?  Check out DPF Services, LLC for all of your diesel particulate filter and diesel oxidation catalysts needs. From cleaning and restoring your existing filter to brand new direct fit replacement parts, we have you covered and can help you get back on the road in no time. 

Our mechanics have thorough standard operating procedures that are specifically aimed at getting our customers back on the road at the lowest cost possible without jeopardizing the integrity of your filter and efficiency of your vehicles performance.

After a DPF cleaning cycle is complete, each filter runs through another series of testing to determine whether the cleaning cycle has restored the filter to its optimum filtration capabilities. Once testing results have concluded and the filter has successfully been cleaned, the unit will then be secured, packaged, shipped and/or delivered to your facility within 24 hours* in fully restored condition. A work order of all services conducted including filters specifications can be emailed, faxed, or delivered with the filter(s).

DPFs that arrive with defects or repairs needed to save an individual unit will be evaluated on a case-by-case basis. Repairs, such as straightening of flanges, welding cracked flanges or repairing bungs, are offered by DPF Services, LLC and will be estimated per unit. Please contact: DPF Services, LLC prior to shipping a defective unit in order to expedite estimates.

Repairing and replacing of sensor fittings (bungs).

The purpose of this Standard Operating Procedure (SOP) is to clarify the parameters used in evaluating sensor bungs for repair or replacement. Initially, when a filter comes in with a request for bung repair / replacement, the following procedure is followed. The bung is visually examined for cracks, breakage, and thread damage. If cracked or broken, the bung is replaced.

If thread damage is evident, the bung is examined to see if sensor threads have galled in the bung. If so, then the galled metal is removed if possible and the bung is rethreaded with the appropriate tap. If threads are damaged and no galling is present, the bung is checked for usability by attempting to screw in a new sensor. If the new sensor will not turn in, the bung is rethreaded with the appropriate tap.

All bungs are checked for functionality using a new sensor to see if the threads need to be retapped before any work is done to ensure that the work being done is necessary. All bungs that are repaired will be designated with the letter R next to the bung. All bungs that are replaced will be designated with the letter W next to the bung.

All efforts are made to repair the bung before a full replacement is performed. The focus of this shop is always to do the best work and do only what is necessary to return the filter to full functioning status. All bungs that are replaced are done so with new bungs that we have manufactured exclusively for our shop. They are all designed to be more robust than industry standard and also more durable.

All parts that are removed from filter units are bagged, labeled with the customer identification, and returned to the customer with the filter unit.

Removing sensors from the filters before cleaning.

The purpose of this Standard Operating Procedure (SOP) is to clarify the parameters used in removing sensors that are left in filters so that they can be properly cleaned. Initially, when a filter comes in with a request for sensor removal, the following procedure is followed.

The sensor fitting is sprayed with PB Blaster penetrating oil by the employee picking it up so the oil has a chance to properly penetrate the threads. Every attempt is made to remove the sensor manually with minimal or no additional damage. If the sensor cannot be removed manually with the proprietary tooling that we use, then the wire is cut so that a pneumatic tool can be brought to bear on the sensor.

If the sensor is successfully removed, the bung is checked with a new sensor to ensure that no thread damage is present. If the new sensor does not turn in, then the bung is rethreaded with the appropriate tap. If the sensor cannot be removed or the sensor breaks off in the bung, then the bung is removed and replaced with a new one.

All bungs that are replaced are done so with new bungs that we have manufactured exclusively for our shop. They are all designed to be more robust than industry standard and also more durable. All efforts are made to repair the bung before a full replacement is performed. The focus of this shop is always to do the best work and do only what is necessary to return the filter to full functioning status.

All parts that are removed from filter units are bagged, labeled with the customer identification, and returned to the customer with the filter unit.