Approval Details

Valid E.O.


This Executive Order approved the specified parts on on December 16, 2009.
As of Monday, May 27th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1988-2006 model-year 4-stroke diesel engines with turbocharging and charge air coolingThis exemption excludes all engines originally equipped with an aftertreatment emission control system such as a catalytic converter or a diesel particulate filter.The device can be installed on engines operated using California diesel (15 ppm sulfur), PuriNOx water emulsion fuel based on California diesel, or biodiesel blends containing no more than 20 percent biodiesel by volume.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-420-14
  • Executive Order 420-14 / D420-14
  • ARB # D-420-14
  • Executive Order No: D-420-14
  • C.A.R.B. No. D-420-14
  • Resolution D-420-14
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-420-14 PDF

D-420-14 Document:

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