We Moved Please direct all communication to 

2841 W Clarendon Ave, Phoenix, AZ 85017

DEC Manufactures a complete line of replacement catalytic converters. We offer thousands of unique models for a direct fit, no problem installation. We are constantly expanding our model lineup and adding new units weekly. Our superior coverage assures you of a one call solution with no surprises.

Professional Services

  • Direct Fit Applications
  • The Right Part the 1st Time
  • Knowledgeable Customer Service Staff

DEC has you covered from applications to geography. If you are in North America we have a legal direct fit converter for you.

Wondering why we had to make the Change? June 1, 2013, New York adopted the same emission regulations that California has been following from the beginning of the 21’ st century. For more information please see the New York information page http://www.dec.ny.gov/chemical/87411.html
DEC is pleased to be the first to offer a full catalog to all of North America. Please click on your location to view your catalog.

Select Federal Catalog, California Catalog, New York Catalog or Canadian Catalog.

Catalog Lookup

New and improved Catalog Look-up. Easier to find what you need…

Select Catalog
Click for California catalog Click for New York catalog Click for Federal catalog Click for Canadian catalog Click for California catalog Click for New York catalog Click for Federal catalog Click for Canadian catalog

Manifold Converters

DEC is a Manifold Converter Specialist with years of Close Coupled & Manifold Mount Experience. Due to their location, Manifold Converters require additional engineering for accuracy and longevity.

New Domestic Applications

Our same DEC Import quality for our domestic aftermarket customers. Domestic Vehicles are not foreign to us. Our specialty OBDII domestic catalytic converters assure you of a part that will fit and perform, and our long term warranty assures the retail consumer of a proper and cost-effective long term solution.

News and events

Diversified Environmental Catalysts, Inc. completes the acquisition of Lori Products, Inc

Van Nuys, CA – January 28, 2011 – Diversified Environmental Catalysts, Inc. (“DECI”), announced today that it has completed the acquisition of Lori Products, Inc. (“LPI”) of Van Nuys, California. LPI has been doing business as Diversified Environmental Catalysts (“DEC”). DEC is a leading manufacturer in the Foreign Automotive Aftermarket for direct fit catalytic converters […]


New Listings

Every day we add new parts & update listings to improve our service to you. Our dedicated staff continually updates our DEC catalog, to provide you the information you need in order to match your application with our quality part. For DEC’s California customers, we continue to work hard to stock converters that have gone […]


New Product Archive

2015 September 9-15-2015 Jun 6-30-2015 May 5-26-2015 5-13-2015 April 4-27-2015 4-13-2015 March 3-5-2015 February 2-23-2015 2-9-2015 January 1-28-2015 1-23-2015 2014 12-30-2014 12-29-2014 11-20-2014 10-20-2014 10-13-2014 9-12-2014 8-14-2014 8-1-2014 7-28-2014 7-14-2014 7-7-2014 6-24-2014 5-2-2014 2-10-2014 1-27-2014 2013 12-30-2013 10-14-2013 9-20-2013 9-9-2013 8-5-2013 8-19-2013 8-26-2013 7-12-2013 7-24-2013 4-15-2013 2-20-2013 1-11-2013 2012 12-3-2012 ( 50 States ) 11-16-2012 […]


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