Upgrade your diesel exhaust system with OEM-quality DOC filter replacements designed in particular for heavy-duty and medium-duty vehicles. Built to meet the standards of original equipment, these properly designed filters provide reliable emissions performance, durability, better exhaust efficiency, and hassle-free direct-fit installation across major diesel engine platforms.
We have diesel DOC filter units for almost all the diesel aftertreatment platforms widely used in the market. For example, Cummins ISB, Detroit DD15, Volvo D13, and Mack MP8. We list the main engine brands and applications that we support on a regular basis.
30 Minute DPF Clean offers DOC filter replacement parts with original equipment manufacturer quality for all exhaust and aftertreatment systems across any heavy-duty or medium-duty diesel engine. If you need a Cummins DOC filter for your on-highway fleet, a Detroit DOC for vocational trucks, or a universal unit for a mixed-brand operation, we have the right part number available and ready to ship.
Built to OEM standards for precise fit, substrate integrity, and long-term aftertreatment reliability.
Straightforward replacement designed to minimize downtime during DOC and aftertreatment service.
Compatible with Caterpillar, Cummins, Detroit, Mack, Navistar, and more.
Our replacement units are made to at least meet the OEM standards, so you not only get a reliable substrate but also a nicely fitting part in your diesel aftertreatment assembly. We have stocks of DOC filters for all the well-known heavy-duty and medium-duty diesel manufacturers, so you won’t have to contact multiple suppliers to get the job done.
A defective or faulty Cummins DOC or any other brand DOC is definitely a major performance problem. As the Diesel Oxidation Catalyst becomes less efficient at converting carbon monoxide and hydrocarbons, passive regeneration will collapse, active regen cycles will fail, and the downstream DPF will be subjected to rapid soot loading. Having the right DOC filter Cummins, or an OEM-equivalent unit on your shelf ensures that your technicians will be able to carry out the repair correctly and have the vehicle back in service on the same day.
Our DOC filters are designed for heavy-duty and medium-duty diesel trucks ranging from Class 4 trucks to Class 8 long-haul semi-trucks. We offer stock fitments for major engine platforms like Cummins ISB, ISC, and ISL, Detroit DD13 and DD15, Volvo D13 and D16, Mack MP8 and MP10, and Paccar PX6 and PX8. If you are not sure of the right part, just give your engine make, model, and year, and we will verify the part number for you.
The specifications of a Cummins doc differ based on the engine family and the diameter of the canister. The most reliable way of verifying compatibility is by cross-checking the OEM part number on the existing unit or the aftertreatment assembly tag. If you want, our team can help with the part number lookup using your engine serial number or VIN if needed.
Our inventory of Detroit Diesel engine DOC filters is very extensive and covers the whole DD-series line, among which the DD13 and DD15 platforms destined for both highway and vocational use show up prominently. For specific model year configurations or combination DOC and DPF assembly requirements, call us, and we will identify the correct part for your application.
The Diesel Oxidation Catalyst is located in front of the DPF in the aftertreatment system. Mainly, it oxidizes hydrocarbons and carbon monoxide in the exhaust and increases the exhaust temperature sufficiently to start passive DPF regeneration. If a DOC goes bad, the whole process gets interrupted, and as a result, there will be regen failures, higher soot levels, and fault codes. Doc and DPF cleaning or replacement should always be considered together when diagnosing regen issues.
Our replacement units are compatible with standard document cleaning processes and approved doc cleaning products that are used in aftertreatment service. In case your existing DOC substrate is intact but contaminated, Cummins DOC cleaning or ultrasonic cleaning through our service department can possibly restore the function before the replacement becomes necessary. Contact us to discuss the best option for your situation.
We ship in-stock DOC filters on the same working day. Under standard freight, most of the continental US shipments will be delivered within 1 to 3 working days. You also have the option to expedite the shipping. Call 856-440-3338 for current stock status and lead times on your specific part numbers.
Walk-ins are always welcome. If you’re on a tight schedule, call ahead and we’ll prioritize your order to get you in and out as fast as possible.
We’ll get back to you within 1 business hour.
See exactly how our advanced hydraulic cleaning system removes 98% of soot and ash from clogged diesel particulate filters — in as little as 30 minutes.
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