Choosing the Right Aftermarket DPF

Choosing the Right Aftermarket DPF

We understand that choosing the right aftermarket diesel particulate filter (DPF) is crucial for your vehicle's performance and longevity. With so many options available on the market, it can be challenging to navigate and make an informed decision. In this article, we will provide you with the essential information to choose the right aftermarket DPF that meets your needs.

What is a Diesel Particulate Filter?

First, let's define what a diesel particulate filter is. A DPF is an emissions control device that captures and stores soot and other fine particles from a diesel engine's exhaust gas. The filter removes harmful particles and reduces the vehicle's emissions. The collected soot is burned off during a process called regeneration, which happens when the filter reaches a specific temperature. The effectiveness of a DPF is measured by its filtration efficiency, which refers to its ability to capture and remove harmful particles from the exhaust gas. As technology advances, diesel particulate filters are becoming more advanced and efficient, leading to better overall performance and reduced environmental impact.


Types of DPF’s to Choose From

Let's dive a little deeper into the three types of diesel particulate filters available on the market:

  1. Ceramic Wall Flow Filters: These filters are the most commonly used type of DPF and are made of porous ceramic material. The filter captures soot and other fine particles in its honeycomb-like structure. The collected particulate matter is then burned off during the regeneration process. Ceramic wall flow filters are known for their durability and long lifespan. They have a high filtration efficiency and can remove up to 90% of particulate matter from exhaust gas. They are also highly effective in reducing harmful emissions, making them a popular choice for many vehicle owners.
  2. Ceramic Fiber Filters: This type of filter is made of a thin, fibrous ceramic material tightly packed into a honeycomb structure. Ceramic fiber filters have a smaller diameter than ceramic wall flow filters and can capture smaller particles. They have a higher filtration efficiency than ceramic wall flow filters and can remove up to 95% of particulate matter from the exhaust gas. However, they are more delicate than ceramic wall flow filters and require more frequent regeneration to avoid clogging.
  3. Metal Fiber Filters: Metal fiber filters are made of stainless steel fibers known for their durability and long lifespan. They have a higher filtration efficiency than ceramic wall flow filters and can remove up to 99% of particulate matter from the exhaust gas. Metal fiber filters are more tolerant of high-temperature environments. They are suitable for use in heavy-duty applications such as off-road equipment. They are also more resistant to damage from vibrations and shock, making them an ideal choice for off-road vehicles.

It's important to note that each type of diesel particulate filter has its unique benefits and drawbacks, and your choice will depend on your vehicle's specifications and usage.

Additionally, it's worth noting that there are some variations within these three categories of DPFs. For example, some ceramic wall flow filters are coated with precious metals like platinum and palladium to improve their durability and increase the oxidation rate during regeneration. Some metal fiber filters may be combined with ceramic materials to improve their filtration efficiency. These variations in DPF design can impact the filter's performance and lifespan, so it's important to consider these factors when making your selection.

Considerations for Choosing a Diesel Particulate Filter in Canada

Diesel Particulate Filter

When selecting a diesel particulate filter (DPF) in Canada, it's important to ensure that the product meets the standards set by the Canadian government to reduce emissions and protect the environment. The Canadian government regulates emissions from on-road and off-road vehicles, including diesel engines, through the Canadian Environmental Protection Act.

To comply with Canadian regulations, it's crucial to choose a DPF that has been certified by the appropriate regulatory body. The Canadian government recognizes the United States Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) as the primary regulatory bodies for emissions control devices. If a DPF meets EPA or CARB standards, it will likely also meet Canadian standards.

The DPF's Quality

It's also worth considering DPF quality and construction when selecting a filter. Poor quality DPFs may not last long and could cause further engine problems, which can be expensive and time-consuming to repair. Therefore, choosing a reputable brand that has been tested and certified to meet industry standards is important.

Finally, some DPFs may feature advanced filtration materials or design features that can improve their performance and lifespan. Consider these factors to ensure that you're investing in the best possible product for your vehicle.

Size and Fitment

When selecting a diesel particulate filter (DPF), choosing the correct size that fits your vehicle is crucial. Choosing an incorrectly sized DPF can cause a decrease in performance and, in some cases, engine damage. DPFs are available in various sizes to fit a wide range of vehicle makes and models.

To determine the correct size for your DPF, you'll need to know your vehicle's engine displacement and exhaust pipe diameter. The engine displacement is typically measured in litres and can be found in your vehicle's owner's manual. The exhaust pipe diameter can be measured with a caliper or obtained from your mechanic or DPF installer.

Choosing a DPF that matches your vehicle's specifications is essential to ensure optimal performance and emissions control. Choosing a DPF that is too small can cause backpressure in the engine and lead to decreased performance while choosing a DPF that is too large can cause the filter to clog and potentially damage the engine.

In addition to the correct size, it's also vital to ensure that the DPF fits your vehicle correctly. Poorly fitting DPFs can cause leaks in the exhaust system, leading to reduced performance and increased emissions. Always consult a professional mechanic or DPF installer to ensure you're selecting the correct DPF size and fitment for your vehicle.


How DPF Canada can Help

Founded in 1998, DPF Canada expanded into diesel aftermarket parts in 2007 and now offers a range of high-quality aftermarket diesel truck DPF and DOC’s, including new units with no core charges or returns required. We provide free shipping in Canada and the USA, making obtaining the necessary parts more accessible than ever to keep your vehicle running smoothly.

When purchasing aftermarket DPF filter parts, you must ensure that the components you're buying are compatible with your vehicle and of good quality, regardless of where you purchase them. DPF Canada can help you find the parts you need and provide guidance on the specific components required for your vehicle. We do the research to ensure aftermarket compatibility and only source high-quality parts that have passed the test of time.

To ensure that you're getting high-quality parts that will last, we offer a range of warranty options, and our knowledgeable team can assist you in finding the right parts for your vehicle. Whether you're looking for a new aftermarket DPF or DOC, DPF Canada is a reliable source for high-quality parts and exceptional customer service.


Choosing the right aftermarket diesel particulate filter is crucial for your vehicle's performance and emissions control. Consider the different types of DPFs, the quality of the product, size and fitment, and maintenance and regeneration when making your selection. By following these guidelines, you can make an informed decision and ensure your vehicle's longevity and optimal performance. Remember always to choose a reputable brand that meets industry standards and complies with regulations.