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One idea. One opportunity. One connection.

The National Automotive Radiator Service Association (NARSA) is a global organization for owners and operators of businesses engaged in the sale, repair, re-manufacture, production and design of heat exchange products and services. 

The International Diesel Emissions Association (IDEA) is a network geared toward helping connect suppliers and manufacturers to businesses involved in the servicing of Diesel Emissions components.


Member Benefits

  • Attend annual conferences
  • Participate in monthly “Lunch & Learn” webinars
  • Subscription to The Cooling Journal, our bi-monthly magazine
  • Subscription to NARSA Now newsletter
  • Connect with 200+ radiator shops and manufacturers, cooling system experts and DPF specialists
  • Access to NARSA/IDEA forum & private Facebook group
  • Access to training videos and past presentations
  • Access to Solder & Soot podcast

Connect with shops & manufacturers around the world


Latest News & Articles

The Cemeteries are Filled with Indispensable People

The pandemic has shown us that people are  adaptable and can adjust to world changing events. Letting go and empowering people may be difficult at first, but the long-term effects are really what being in business is all about. Working together as a team has transformed our organization. The less I’m needed, the more successful we’ve become. 

March/April 2021 Cooling Journal

In the March/April 2021 cover story, we learn the origin story of Diesel Emissions Service and how DES owner Steve Hoke’s business philosophy impacts his companies. This issue also includes several technical articles on typical Shell & Tube heat exchangers, Aftertreatment 101 and a guide to turning Plastic Tanks to All-Metal.

Webinar: Fitting Identification (Part 1)

Heavy Duty cooling system repair requires properly identifying fittings. It is recommended to test certain heat exchangers with high pressure nitrogen. In order to test at 300 psi, it is necessary to have fittings that will seal the cooler’s original fitting set up. Identifying the fitting that will be needed for testing will be covered in this webinar. 

“Solder & Soot” Podcast Episode 04: Diesel Emissions Service

In Episode 4, we talk with Steve Hoke of Diesel Emissions Service. Hoke’s empire has grown to include manufacturing and distributing diesel particulate filter accessories and parts. Hear how his business philosophy focuses on relationships and how he’s helping educate other members within NARSA/IDEA.

Webinar: Repeatable DPF Cleaning Ensuring Quality

How can you get verifiable DPF cleanings regardless of the brand of machine you’re using? During this session led by DES Engineering & UL Shop Manager Russ Tuckerman, you’ll learn the best steps to have a repeatable DPF cleaning program no matter what type of brand of cleaning equipment you have.

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