Approval Details

Valid E.O.


This Executive Order approved the specified parts on on September 25, 1991.
As of Sunday, February 25th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
GD-1 & GD-21991 and older model-year medium and heavy duty gasoline and diesel engines.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-204-3
  • Executive Order 204-3 / D204-3
  • ARB # D-204-3
  • Executive Order No: D-204-3
  • C.A.R.B. No. D-204-3
  • Resolution D-204-3
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-204-3 PDF

D-204-3 Document:

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