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1> Dorman 674-2015 Diesel Particulate Filter (DPF) Compatible with Select Models (Non-CARB Compliant)

If you own a diesel truck, then the Diesel Particulate Filter (DPF) is an integral component that helps maintain proper performance of your engine. Essential for keeping harmful emissions out of our environment and providing better overall gas mileage with increased vehicle power; Dorman DPFs thoroughly remove all types or soot to provide superior filtration systems which are perfect replacements ensuring proper fit every time!

It comes with direct replacement, trustworthy quality, good level of fitment, durable construction, and reliable replacement.


  • The Brand is Dorman.
  • The Product Grade is Replacement Part.
  • The Vehicle Service Type is Truck.
  • The Item Weight is 52 Pounds.

2> A1 Cardone 6D-20000 Remanufactured Diesel Particulate Filter

Diesel Particulate Filters are a crucial component of an advanced exhaust system in reducing emissions to environmentally friendly levels. The Diesel upgrade provides better filtration and removal that can be re-used hundreds, if not thousands of times before needing replacement! CARDONE offers Remanufactured filters for those looking alternatives with coverage on 90% marketplaces today – saving you time & money while providing maximum protection against soot from diesel engines


  • The Brand is A1 Cardone.
  • The Product Grade is Performance Part.
  • The Outer Material is Stainless Steel.
  • The Vehicle Service Type is Passenger Car, Truck.
  • The Item Weight is 45 Pounds.


What is Diesel Particulate Filter?

A Diesel Particulate Filter (DPF) is an after-treatment system that acts as a trap in the exhaust gas line of cars running on diesel. It captures harmful particles emitted by diesel engines before they reach the environment

and prevents them from entering the atmosphere, thus improving air quality in populated areas . DPFs are intended to be active for the entire lifetime of the car and will go “back to sleep” if not used.

The most common way to remove particulate matter out of vehicle exhaust gas is with a combination of adsorption (to trap smaller particles) and oxidation (to decompose larger soot particles). In this process, oxygen from the air reacts with carbon components in soot at high temperatures in the range of 400 to 800 °C. The reaction products are carbon dioxide and some elemental carbon that is not absorbed in the filter, but appears in the exhaust gas together with nitrogen oxides.

The flow path inside a diesel particulate filter is formed by fibrous substrate coated with precious metals, which act as catalysts for soot oxidation . The substrate’s large pores enable exhaust gas to permeate them in order to react with oxidants on the external surface . Soot particles are trapped when they attach to it due to Van der Waals forces and diffusion processes. Unburnt fuel particles and droplets of lubricating oil from engine crankcase venting (blow-by) also adhere to the wall of a diesel particulate filter and reduce its efficiency.

A diesel particulate filter system (DPF) typically consists of a number of cylindrical filters housed in a metal or plastic casing. The filters are usually just less than the width of the exhaust pipe to ensure that all particles are collected as they flow through it, normally with an additional pre-filter upstream . A DPF equipped vehicle has no visible tailpipe emissions.

Filters need to be removed from time to time for inspection during scheduled maintenance, depending on use and driving conditions. This is achieved by one of two methods: either by being taken out of the car’s exhaust system where it can be accessed via a removable panel usually located under the boot floor; or by being automatically burnt off in a “regeneration” process. The latter method requires engine management systems to be present and operative, and is usually initiated automatically when the filter’s efficiency is low enough for this to be possible, such as when the vehicle is decelerating (engine braking) or idling, or can also happen in hot soak mode if it has been running recently.

An electronically sniffed diesel-engined Ford Transit Tourneo service bus developed by FirstGroup for East London Busways has been called the world’s first commercially available passenger-carrying road vehicle with an on-board DPF system. It was introduced in November 2008.

Other manufacturers are now offering DPFs – see the Powertrain page section below for more details.

DPF(diesel particulate filter) FAQs

1.What is diesel exhaust?

Diesel exhaust is a mixture of gases produced by the combustion of diesel fuel inside the cylinders of an engine. It contains about 40 known carcinogens including benzene, formaldehyde, and 1,3-butadiene . Exposure to these substances has been correlated with increased rates of respiratory illnesses such as bronchitis, asthma, emphysema , lung cancer , infections, abnormal heartbeat , miscarriage , birth defects, low birth weight , developmental problems in children and decreased life expectancy . Soot (particles in this dangerous mix) can lodge in human lungs and cause breathing difficulties that range from coughing to chronic bronchitis, asthma or fatal lung disease.

2.What is a Diesel Particulate Filter (DPF)?

A Diesel Particle Filter traps fine particles in diesel exhaust before it leaves your vehicle’s tailpipe. A DPF can improve air quality and may reduce your exposure to harmful emissions when properly maintained

3.How does a Diesel Particulate Filter work?

In 2007, EPA adopted new emissions standards for diesel engines designed to significantly reduce emissions from the on-road heavy-duty highway diesel engine category—including all Class 8 trucks and buses . These standards require that manufacturers produce cleaner diesel engines that meet progressively stricter tailpipe standards over time, starting with the 2012 model year . The challenges of meeting these standards have required engine and equipment manufacturers to work together to develop new, cleaner diesel technologies . One of those technologies is the Diesel Particulate Filter. DPFs capture soot and other particles from engine exhaust before it leaves the tailpipe.

4.What is a regenerated Diesel Particulate Filter?

A diesel emission filter that has been used, then cleaned by burning off trapped particles in an oxygen-free environment (a process known as regeneration) until it can trap additional particles again. The illustration shown here was taken from a 2004 Caterpillar brochure. You can see a section cut out of a DPF with dark areas where the trapped soot was burned off until it could be regenerated again. This technology will become more important as the soot levels in the exhaust of on-road diesel engines continue to decline.

5.How can I tell if a DPF is working?

There are no warning lights or gauges that directly show the DPF’s effectiveness. Even though it is intended to be maintenance-free, most engine manufacturers recommend inspections at intervals from 30,000 miles to more than 100,000 miles. Vehicle operators should refer to their owner’s manuals for information on these inspections. Whether you purchase a new vehicle or a used vehicle , make sure you know what any existing warranty covers before you buy a used vehicle

6. How do they affect fuel economy?

All else being equal, a clean running engine will always get better gas mileage and use less fuel than a dirty running engine.

7. How can vehicle operators help ensure that the life of their DPF is maximized?

Vehicle operators should follow the recommendations for reducing ash buildup in the diesel fuel they use to reduce soot production and extend the life of their DPFs .

8. What are manufacturers doing now to lessen concerns about DPFs?

Manufacturers are continuing to develop technologies that are expected to allow vehicles to meet increasingly stringent federal emissions standards, including tighter limits on diesel exhaust particulates. This includes programs such as Cummins PowerGenetics™ , where Cummins experts work with truck builders across North America to optimize turbocharger placement, boost pressure, timing and nozzle size for each application. Data from these efforts is used to develop new models with even cleaner engines. Some truck manufacturers are experimenting with Selective Catalytic Reduction (SCR) systems to reduce NOx, but these will require the use of urea solutions as an additional fluid to be mixed in with diesel fuel.

9. Are DPFs required on all vehicles?

No, they are not currently required on all vehicles. However, due to recent changes in EPA emission standards for heavy-duty trucks and buses , many engine manufacturers are now including them as standard equipment on today’s newer vehicles .

10. Will this apply retroactively?

No , CPC does not address existing mobile sources or their emissions. This regulation is focused on future mobile sources which may include diesel particulate filters that have never been used before.

11. How are the new limits for particulate matter in diesel exhaust established?

EPA set these levels based on extensive research using well-established health benchmarks to ensure the protection of public health, including sensitive populations such as children, older adults and asthmatics . The limits were also agreed upon in consultation with the U.S. Department of Health and Human Services’ (HHS) Clean Air Scientific Advisory Committee (CASAC).

12.What is being done in this country to help control diesel emissions?

Diesel emission controls have made significant progress over the past 25 years through a combination of engine manufacturer technology improvements , vehicle operator training programs, federal enforcement initiatives at both state and agencies , utility company infrastructure improvement efforts, and the widespread use of emission after-treatment devices, including DPFs. To continue this progress in reducing diesel emissions, EPA has developed new federal standards for heavy-duty trucks and buses , which are expected to result in cleaner diesel engines with significantly lower emissions .

13. How much health benefit will their be from these new changes?

EPA’s analysis shows that the final rule is projected to save between 160,000 and 230,000 lives each year once all provisions have been fully implemented in 2014 . The total health benefits – valued at more than $100 billion per year – far outweigh the estimated annual costs of less than $800 million.

14. What happens if a vehicle doesn’t meet the standard ?

Vehicle manufacturers must meet the new standards by installing effective emission controls . If they fail to do so, EPA may issue civil penalties for noncompliance.

15. When will the final rule take effect?

Manufacturers must meet the new standards with their model year 2014 vehicles. Manufacturing of these vehicles begins in August 2012, which means most models of heavy-duty highway engines should already be available on dealer lots by fall 2013. Some engine manufacturers are expected to meet this standard earlier than others due to factors such as production schedules and engineering resources available for advanced development of clean diesel technologies .

16. How much money will vehicle operators save because of improved fuel economy ?

The net cost per ton of NOx reduced is estimated at $869 per ton NOx (in 2011 dollars). With an estimated reduction of 21,000 tons NOx per year , this rule would result in approximately $1.7 million per year in fuel savings for each ton of NOx reduced .

17. What will happen to the price of new engines?

Manufacturers are expected to continue reducing costs related to diesel particulate matter emission controls, due to increases in production scale and improved efficiencies resulting from technological advancements over time . At the same time, engine manufacturers may choose different approaches for meeting EPA’s standards depending on their product lines, some using more advanced technologies while others using proven control strategies. Some manufacturers have already demonstrated that it is possible to meet these standards while achieving substantial reductions in fuel consumption .

18. How much impact will the rule have on fuel prices?

EPA estimates that this final rule, using the “best estimate” for implementation costs as described earlier , is anticipated to result in a net cost per gallon of diesel fuel increase of 0.18 cents .

19. How much impact will it have on vehicle operators?

While there may be some additional out-of-pocket expenses associated with the first year of owning a new engine, over a period of ten years these expenditures should average less than 1 percent of a heavy duty truck operator’s annual operating budget.

Final Thoughts

DPF is a sensor that detects exhaust gas recirculation. This sensor has a heating element which warms up the DPF. The whole process takes place inside a tiny metal box, containing the DPF and an electric wire – this is what we call the Diesel Particulate Filter (DPF). In order to avoid any damage to the engine, DPF is heated as long as it’s not hot enough for proper cleaning. When reading this article you will find out what happens when there’s no power going to your diesel particulate filter module, how to test if there’s power going to your diesel particulate filter module and finally what could cause a lack of power going into your diesel particulate filter module.