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DCL is a global leader in the design, manufacture and implementation of advanced emission control systems for stationary and mobile internal combustion engines. DCL’s product offering includes catalytic converters, catalytic mufflers, engineered silencers, diesel particulate filters, replacement catalyst elements, as well as heat recovery and siloxane cleanup solutions, all of which are internationally recognized as the industry standard for quality and reliability.
Our technical sales professionals work closely with our engineering and manufacturing teams to develop the best emissions control solution for your needs. DCL sales professionals are strategically situated across North America and Europe to provide local emissions regulation expertise as well as expert product knowledge and sales support. Our network of warehouses ensures prompt delivery of replacement parts and many standard catalysts sizes.

DCL’s extensive engineering, manufacturing and testing capabilities provide a one-stop source for development, design, testing and validation of emission control systems. Our vertically integrated approach to product development provides highly customized solutions, shorter lead times, and greater quality control, translating to outstanding performance, longer product life and lower cost of ownership for our customers. Our capabilities include high volume products, low volume or custom prototypes, and large industrial housings. Visit the technology section for further information on DCL’s design and development process.


DCL is ISO 9001:2015 certified for research, design and manufacturing of emission control technologies. DCL also holds certifications from the American Society of Mechanical Engineers (ASME) for the construction of heat exchangers and other pressure vessels. DCL is committed to provide a high degree of value in products and services through dedication to quality, continual improvement and risk based thinking. To achieve these objectives it is our policy to:

  • Understand customer needs and accordingly design products to meet or exceed customer’s requirements for emissions, noise, durability and reliability;
  • Extend excellent customer support and service at all times; and
  • Seek opportunities for development and improvement of products, manufacturing methods and resources.

We pledge dedicated efforts and commitment of our employees toward fulfillment of the above.

emission control
emission control
emission control
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To meet the specialized emissions control needs of our customers, DCL has adopted an integrated approach, encompassing all aspects of product development, design, manufacturing and testing. This single-source capability enables us to provide better engineered emissions solutions that deliver outstanding performance, longer life and lower cost of ownership. Our superior product quality has made DCL the choice of customers around the world.