Approval Details

Valid E.O.


This Executive Order approved the specified parts on on December 10, 2002.
As of Sunday, February 25th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1994-2002 model-year Cummins L10, M11, N14, ISB, ISC, ISL, ISM, ISN, ISX, Signature, B-series, and C-series heavy-duty diesel engines. This exemption excludes all engines originally certified with an aftertreatment emission control system such as an oxidation catalyst that would require removal before the EGRT Diesel Emission Reduction System can be installed.The system includes a low-pressure exhaust gas recirculation system and the Continuously Regenerating Technology Particulate Filter.This exemption is only valid provided the engines meet the following operating conditions: (1) the engine exhaust temperature is greater than or equal to 260 degrees Celsius for 40 percent of the typical duty cycle, (2) the NOx to PM ratio is at least 20, and (3) the engine is operated using diesel with a maximum sulfur conent of 50 parts per million by weight.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-393-5
  • Executive Order 393-5 / D393-5
  • ARB # D-393-5
  • Executive Order No: D-393-5
  • C.A.R.B. No. D-393-5
  • Resolution D-393-5
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-393-5 PDF

D-393-5 Document:

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