Global Diesel Engine Catalyst Market Growth, Share, Size, Trends and Forecast (2025 - 2031)

• Johnson Matthey launched ActivDPFTM diesel particulate filter (DPF) system, an innovative system in March’2019 for stationary diesel engines. The technology offers engineers and facility operators clean energy whenever needed with no requirement of filter monitoring system.

• In March 2019, Johnson Matthey launched an innovative, automatically regenerating Active DPF diesel particulate filter (DPF) system for stationary diesel engines.

The global diesel engine catalyst market is segmented by technology, application, and sales channel. In terms of technology, the market includes Diesel Oxidation Catalysts (DOC), Diesel Particulate Filters (DPF), Selective Catalytic Reduction (SCR), and other technologies. DOCs are designed to convert carbon monoxide and hydrocarbons into carbon dioxide and water, helping to reduce harmful emissions. DPFs, on the other hand, trap particulate matter and periodically burn it off through a regeneration process, significantly reducing soot emissions. SCR technology is used to convert nitrogen oxides into nitrogen and water using a urea-based solution, making it one of the most effective methods for reducing NOx emissions. Other technologies in this segment include Lean NOx Traps (LNT) and Ammonia Slip Catalysts (ASC), each contributing to the overall reduction of diesel emissions through different mechanisms.

When segmented by application, the diesel engine catalyst market serves both on-road and off-road vehicles. On-road applications primarily involve commercial vehicles such as trucks and buses, which require robust emission control solutions due to their high fuel consumption and long operational hours. The on-road segment is driven by stringent emission regulations and the need for fuel efficiency. Off-road applications include agricultural machinery, construction equipment, and industrial engines. These vehicles and machines also face emission standards, though they differ from on-road regulations. The off-road segment is crucial as it represents a significant portion of diesel engine usage, especially in industries reliant on heavy-duty machinery.

The market is further segmented by sales channel into Original Equipment Manufacturers (OEM) and the aftermarket. OEMs integrate diesel engine catalysts during the manufacturing of vehicles and machinery, ensuring compliance with emission standards from the start. The OEM segment benefits from the rising production of diesel-powered vehicles and equipment, driven by industrialization and transportation needs. The aftermarket segment, on the other hand, involves the replacement and retrofitting of catalysts in existing vehicles and machinery. This segment is essential for maintaining emission compliance over the lifespan of diesel engines, especially as regulations become stricter and vehicles age. The aftermarket offers opportunities for companies to provide upgraded catalyst solutions that enhance performance and meet newer standards.

Global Diesel Engine Catalyst Segment Analysis

In this report, the Global Diesel Engine Catalyst Market has been segmented by Technology, Application, Sales Channel and Geography.

Global Diesel Engine Catalyst Market, Segmentation by Technology

The Global Diesel Engine Catalyst Market has been segmented by Technology into Diesel Oxidation Catalysts (DOC), Diesel Particulate Filters (DPF), Selective Catalytic Reduction (SCR) and Others.

Diesel Oxidation Catalysts (DOC) are a foundational technology in diesel emission control. They operate by oxidizing carbon monoxide (CO) and hydrocarbons (HC) into carbon dioxide (CO2) and water (H2O). DOCs are typically the first line of defense in reducing diesel emissions and are often used in conjunction with other technologies to enhance overall emission reduction efficiency. Their relatively simple design and effectiveness make them a widespread choice across various applications.

Diesel Particulate Filters (DPF) are another critical technology in the diesel engine catalyst market. DPFs capture and store particulate matter (PM) from diesel exhaust, which is then periodically burned off in a process known as regeneration. This technology is particularly effective in reducing soot emissions, a significant component of diesel exhaust that contributes to air pollution and health issues. DPFs are essential for meeting stringent particulate matter emission standards and are commonly used in both on-road and off-road diesel engines.

Selective Catalytic Reduction (SCR) technology represents a more advanced approach to controlling diesel emissions, specifically targeting nitrogen oxides (NOx). SCR systems use a urea-based solution, often referred to as Diesel Exhaust Fluid (DEF), which is injected into the exhaust stream. This fluid reacts with NOx in the presence of a catalyst to form harmless nitrogen (N2) and water vapor (H2O). SCR is highly effective in reducing NOx emissions and is increasingly adopted in regions with stringent NOx regulations. The efficiency and reliability of SCR systems make them a preferred choice for many heavy-duty diesel applications.

Other technologies within this market segment include Lean NOx Traps (LNT) and Ammonia Slip Catalysts (ASC). Lean NOx Traps are used to adsorb NOx during lean operation conditions and release and reduce it during rich conditions. Ammonia Slip Catalysts (ASC) are employed downstream of SCR systems to capture any excess ammonia (NH3) that might slip through the SCR catalyst. These additional technologies help optimize the overall emission control system, ensuring compliance with various environmental regulations and enhancing the performance and longevity of diesel engines.

Global Diesel Engine Catalyst Market, Segmentation by Application

The Global Diesel Engine Catalyst Market has been segmented by Application into On-Road and Off-Road.

In the on-road application segment, diesel engine catalysts are primarily used in commercial vehicles such as trucks, buses, and passenger cars. These vehicles are subject to rigorous emission standards due to their significant impact on urban air quality and public health. The on-road segment is driven by stringent regulations that mandate the reduction of pollutants like nitrogen oxides (NOx), particulate matter (PM), and carbon monoxide (CO). As a result, technologies such as Diesel Oxidation Catalysts (DOC), Diesel Particulate Filters (DPF), and Selective Catalytic Reduction (SCR) are extensively employed to ensure compliance with these standards. The increasing production and usage of diesel-powered vehicles in both developed and emerging markets contribute to the growth of this segment, as automotive manufacturers continuously adopt advanced emission control technologies to meet regulatory requirements and enhance vehicle performance.

In the off-road application segment, diesel engine catalysts are used in agricultural machinery, construction equipment, mining vehicles, and other industrial engines. These engines operate in various harsh and demanding environments where durability and efficiency are critical. Off-road applications face unique emission challenges, often governed by different standards compared to on-road vehicles. The adoption of diesel engine catalysts in this segment is driven by the need to control emissions in these heavy-duty engines and comply with regulations that vary by region and industry. Technologies like DPF and SCR are commonly used to address the specific emission control needs of off-road machinery, which often includes higher particulate matter and NOx emissions due to the nature of their operation. The growth in infrastructure development, agricultural activities, and industrial expansion boosts the demand for off-road diesel engine catalysts, highlighting their importance in maintaining environmental standards and operational efficiency in these sectors.

Global Diesel Engine Catalyst Market, Segmentation by Sales Channel

The Global Diesel Engine Catalyst Market has been segmented by Sales Channel into OEM and Aftermarket.

In the OEM segment, diesel engine catalysts are integrated into vehicles and machinery during the manufacturing process. This channel serves as the primary means of ensuring that new diesel engines meet the required emission standards from the outset. OEMs typically work closely with catalyst manufacturers to design and incorporate emission control systems that are optimized for specific engine models. The OEM segment benefits from the ongoing production of new diesel-powered vehicles and equipment, which are subject to stringent emission regulations. This channel is driven by the demand for compliance with regulatory standards and the need for high-performance, reliable catalyst solutions that can be seamlessly integrated into new engines.

The Aftermarket segment, on the other hand, deals with the replacement and retrofitting of diesel engine catalysts in existing vehicles and machinery. This segment plays a crucial role in maintaining emission compliance as vehicles age and regulatory standards become more stringent. Aftermarket catalysts are often used to upgrade older engines or replace worn-out components to ensure continued compliance with emission regulations. The aftermarket segment is driven by factors such as the increasing longevity of diesel engines, the need for cost-effective emission control solutions, and the growing focus on environmental sustainability. It provides opportunities for catalyst manufacturers to offer advanced products and services that meet evolving emission standards and improve the performance of older diesel engines.

Global Diesel Engine Catalyst Market, Segmentation by Geography

In this report, the Global Diesel Engine Catalyst Market has been segmented by Geography into five regions; North America, Europe, Asia Pacific, Middle East and Africa and Latin America.

Global Diesel Engine Catalyst Market Share (%), by Geographical Region, 2024

In North America, the diesel engine catalyst market is influenced by stringent emission regulations set by agencies such as the Environmental Protection Agency (EPA). The United States and Canada have implemented rigorous standards to control diesel emissions, driving the demand for advanced catalyst technologies like Diesel Oxidation Catalysts (DOC), Diesel Particulate Filters (DPF), and Selective Catalytic Reduction (SCR). The presence of a mature automotive and industrial sector further supports the market, as manufacturers and operators seek to comply with regulations and enhance vehicle and equipment performance.

Europe is a significant market for diesel engine catalysts, largely due to its stringent emission norms established by the European Union (EU). The EU’s regulations, including the Euro standards, have driven widespread adoption of advanced emission control technologies across both on-road and off-road applications. The European market is characterized by high demand for diesel engine catalysts due to its large base of diesel vehicles and industrial machinery, along with ongoing efforts to reduce environmental impact and improve air quality.

In Asia-Pacific, the diesel engine catalyst market is experiencing substantial growth driven by rapid industrialization, urbanization, and increasing vehicle production in countries like China and India. These countries are implementing stricter emission standards to address pollution and environmental concerns, which is boosting the demand for diesel engine catalysts. The region’s expanding automotive industry, coupled with rising infrastructure development and industrial activities, contributes to the growth of this market segment.

Latin America presents a growing market for diesel engine catalysts, with demand driven by increasing vehicle ownership and industrial growth. While emission regulations in Latin America are generally less stringent compared to other regions, there is a rising trend towards improving emission controls and adopting advanced technologies. Countries like Brazil and Mexico are leading the way in adopting stricter standards and enhancing the performance of diesel engines, which is driving the market.

The Middle East and Africa, while representing a smaller portion of the global diesel engine catalyst market, are seeing growth due to increasing industrial activities and transportation needs. The demand for diesel engine catalysts in this region is influenced by the expansion of infrastructure projects and the need to control emissions from diesel-powered vehicles and machinery. The market is expected to grow as countries in this region gradually implement more stringent emission regulations and focus on environmental sustainability.

This report provides an in depth analysis of various factors that impact the dynamics of Global Diesel Engine Catalyst Market. These factors include; Market Drivers, Restraints and Opportunities Analysis.

Drivers, Restraints and Opportunity Analysis

Drivers :

• Stringent emission regulations
• Environmental concerns

• Advancements in catalyst technologies - Advancements in catalyst technologies have significantly enhanced the efficiency and effectiveness of diesel engine emission control systems. One of the most notable innovations is the development of advanced Diesel Oxidation Catalysts (DOC). Modern DOCs incorporate improved catalyst materials and designs that offer enhanced oxidation reactions, leading to more efficient conversion of carbon monoxide (CO) and hydrocarbons (HC) into carbon dioxide (CO2) and water. These advancements help reduce harmful emissions and improve overall engine performance.

  Another significant advancement is in Diesel Particulate Filters (DPF). Recent technological improvements include the use of advanced filter materials and regeneration techniques. Enhanced filter designs and catalytic coatings have improved the DPF’s ability to capture and effectively burn off particulate matter (PM) during regeneration cycles. This results in better control of soot emissions and contributes to cleaner diesel exhaust systems, aligning with stricter environmental regulations.

  Selective Catalytic Reduction (SCR) technology has also seen substantial advancements. The development of more efficient SCR catalysts and the optimization of urea-based solutions, such as Diesel Exhaust Fluid (DEF), have improved the reduction of nitrogen oxides (NOx) in diesel exhaust. Newer SCR systems offer better performance at lower temperatures, expanded operating ranges, and longer service intervals, addressing the challenges of NOx emissions more effectively and contributing to overall emission compliance.

  In addition to these technologies, there has been progress in integrating various emission control technologies into comprehensive after-treatment systems. Innovations include the combination of SCR with other technologies, such as Ammonia Slip Catalysts (ASC) and Lean NOx Traps (LNT), to address a broader range of pollutants and enhance the efficiency of emission reduction. These integrated systems are designed to meet evolving regulatory requirements and provide a holistic approach to diesel engine emission control.

Restraints :

• High cost of catalyst technologies
• Fluctuating raw material prices

• Increasing adoption of electric vehicles (EVs) - The increasing adoption of electric vehicles (EVs) represents a transformative shift in the automotive industry, driven by a combination of environmental, economic, and technological factors. As governments and organizations worldwide intensify their efforts to combat climate change and reduce greenhouse gas emissions, EVs have emerged as a key solution due to their ability to eliminate tailpipe emissions entirely. This growing focus on sustainability has led to substantial investments in EV technology and infrastructure, including advancements in battery technology, charging networks, and vehicle design.

  The shift towards EVs is further accelerated by evolving consumer preferences and the desire for cleaner, more efficient transportation options. As EV technology becomes more affordable and accessible, consumers are increasingly drawn to the benefits of electric mobility, including lower operating costs, reduced maintenance requirements, and the environmental advantages of zero-emission driving. The expansion of government incentives and subsidies, such as tax credits and rebates for EV purchases, has also played a crucial role in making electric vehicles more attractive and financially viable for a broader range of consumers.

  Automakers are responding to this shift by ramping up their production of electric vehicles and investing in the development of new EV models. Many major automotive manufacturers are committing to electrifying their vehicle lineups and setting ambitious targets for reducing their carbon footprints. This increased focus on EVs is leading to a wider variety of electric vehicle options, including compact cars, SUVs, and commercial vehicles, catering to diverse consumer needs and preferences.

  The rise of electric vehicles also influences other sectors, such as the energy and infrastructure industries. The growth in EV adoption drives demand for expanded charging infrastructure, which includes the installation of public and private charging stations and the development of fast-charging technologies. Additionally, advancements in energy storage and grid management are essential to support the widespread adoption of EVs and ensure the integration of renewable energy sources.

Opportunities :

• Technological advancements in catalyst materials
• Growth in commercial vehicle production

• Expansion in emerging markets - The expansion in emerging markets is a significant driver of growth in various industries, including the diesel engine catalyst market. Emerging economies, particularly in regions such as Asia-Pacific, Latin America, and parts of Africa, are experiencing rapid industrialization, urbanization, and economic development. This growth is accompanied by increased demand for transportation and construction machinery, which in turn drives the need for advanced emission control technologies.

  In emerging markets, the expansion of infrastructure projects, such as roads, bridges, and commercial buildings, fuels the demand for diesel-powered construction equipment and machinery. As these markets develop, there is a rising need to address environmental concerns related to diesel emissions. This has led to the adoption of diesel engine catalysts to comply with increasingly stringent emission regulations and to mitigate the environmental impact of industrial activities.

  Additionally, the growing middle class and increasing vehicle ownership in emerging economies contribute to higher demand for diesel-powered vehicles, including trucks and buses used for transportation and logistics. As these countries adopt stricter emission standards to combat air pollution and improve public health, there is a corresponding need for advanced catalyst technologies to ensure compliance.

  Governments in emerging markets are also implementing policies and regulations to support environmental sustainability and reduce emissions. These policies often include incentives for adopting cleaner technologies and mandates for improved emission standards, which drive the adoption of diesel engine catalysts. The expansion of regulatory frameworks and enforcement mechanisms in these regions is crucial for encouraging the use of emission control technologies and promoting environmental protection.

Key players in Global Diesel Engine Catalyst Market include :

• Magneti Marelli S.p.A.
• BASF SE
• SANGO Co., Ltd
• Johnson Matthey
• Umicore N.V.
• Perkins Engines Company Limited
• CDTi Advanced Materials, Inc.
• Nett Technologies Inc.
• Eberspcher
• Continental AG

In this report, the profile of each market player provides following information:

• Company Overview and Product Portfolio
• Key Developments
• Financial Overview
• Strategies
• Company SWOT Analysis