Approval Details

Valid E.O.


This Executive Order approved the specified parts on on November 16, 2012.
As of Friday, April 19th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

2002-2008 model-year 4-stroke diesel engines with displacements up to 16.1 liters and horsepower ratings from 100 to 630. Please see Attachment A for a complete list of engine families.This exemption excludes all engines originally equipped with an adtertreatment emission control system such as a diesel oxidation catalyst or a diesel particulate filter.This exemption is only valid provided the engines meet the following operating conditions: (1) the engine exhaust temperature is above 240 degrees Celsius for at least 40 percent of the typical duty cycle, (2) the engine is operated using ultra low sulfur diesel with a maximum sulfur content of 15 parts per million by weight or biodiesel blends containing no more than 20 percent biodiesel by volume and (3) the vehicle must have a manufacturerÔÇÖs Gross Vehicle Weight Rating of greater than 14,000 lbs.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-420-16
  • Executive Order 420-16 / D420-16
  • ARB # D-420-16
  • Executive Order No: D-420-16
  • C.A.R.B. No. D-420-16
  • Resolution D-420-16
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-420-16 PDF

D-420-16 Document:

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